diff --git a/build.sh b/build.sh
index a02769e..1df1dd2 100755
--- a/build.sh
+++ b/build.sh
@@ -75,6 +75,7 @@ gcc src/main.c src/debug.c \
 	temp/utils/bucketlist.o \
 	temp/objects/o_map.o \
 	temp/objects/o_none.o \
+	temp/objects/o_list.o \
 	temp/objects/o_bool.o \
 	temp/objects/o_string.o \
 	temp/runtime/runtime.o \
diff --git a/samples/list.noja b/samples/list.noja
new file mode 100644
index 0000000..7277e92
--- /dev/null
+++ b/samples/list.noja
@@ -0,0 +1,7 @@
+
+
+l = [1, 2, 3];
+
+print(count);
+print(count(l));
+print(l, '\n');
\ No newline at end of file
diff --git a/src/common/executable.c b/src/common/executable.c
index 8897bbc..015f2ba 100644
--- a/src/common/executable.c
+++ b/src/common/executable.c
@@ -58,6 +58,7 @@ static const InstrInfo instr_table[] = {
 	[OPCODE_ASS]  = {"ASS", 1, (OperandType[]) {OPTP_STRING}},
 	[OPCODE_POP]  = {"POP", 1, (OperandType[]) {OPTP_INT}},
 	[OPCODE_CALL] = {"CALL", 1, (OperandType[]) {OPTP_INT}},
+	[OPCODE_INSERT] = {"INSERT", 0, NULL},
 	[OPCODE_PUSHINT] = {"PUSHINT", 1, (OperandType[]) {OPTP_INT}},
 	[OPCODE_PUSHFLT] = {"PUSHFLT", 1, (OperandType[]) {OPTP_FLOAT}},
 	[OPCODE_PUSHSTR] = {"PUSHSTR", 1, (OperandType[]) {OPTP_STRING}},
@@ -66,6 +67,7 @@ static const InstrInfo instr_table[] = {
 	[OPCODE_PUSHFLS] = {"PUSHFLS", 0, NULL},
 	[OPCODE_PUSHNNE] = {"PUSHNNE", 0, NULL},
 	[OPCODE_PUSHFUN] = {"PUSHFUN", 2, (OperandType[]) {OPTP_INT, OPTP_INT}},
+	[OPCODE_PUSHLST] = {"PUSHLST", 1, (OperandType[]) {OPTP_INT}},
 
 	[OPCODE_RETURN] = {"RETURN", 0, NULL},
 
diff --git a/src/common/executable.h b/src/common/executable.h
index 41d7e99..48ba952 100644
--- a/src/common/executable.h
+++ b/src/common/executable.h
@@ -37,6 +37,7 @@ typedef enum {
 	OPCODE_ASS,
 	OPCODE_POP,
 	OPCODE_CALL,
+	OPCODE_INSERT,
 	OPCODE_PUSHINT,
 	OPCODE_PUSHFLT,
 	OPCODE_PUSHSTR,
@@ -45,6 +46,7 @@ typedef enum {
 	OPCODE_PUSHFLS,
 	OPCODE_PUSHNNE,
 	OPCODE_PUSHFUN,
+	OPCODE_PUSHLST,
 	OPCODE_RETURN,
 	OPCODE_JUMPIFANDPOP,
 	OPCODE_JUMPIFNOTANDPOP,
diff --git a/src/compiler/ASTi.h b/src/compiler/ASTi.h
index 46c75b2..4ed7654 100644
--- a/src/compiler/ASTi.h
+++ b/src/compiler/ASTi.h
@@ -33,6 +33,7 @@ typedef enum {
 	EXPR_ASS,
 	EXPR_INT,
 	EXPR_CALL,
+	EXPR_LIST,
 	EXPR_NONE,
 	EXPR_TRUE,
 	EXPR_FALSE,
@@ -78,6 +79,12 @@ typedef struct {
 	int   len;
 } StringExprNode;
 
+typedef struct {
+	ExprNode base;
+	Node    *items;
+	int      itemc;
+} ListExprNode;
+
 typedef struct {
 	ExprNode base;
 	char *val;
diff --git a/src/compiler/compile.c b/src/compiler/compile.c
index 82c5fc2..1581a4e 100644
--- a/src/compiler/compile.c
+++ b/src/compiler/compile.c
@@ -113,6 +113,42 @@ static _Bool emit_instr_for_node(ExeBuilder *exeb, Node *node, Error *error)
 							return ExeBuilder_Append(exeb, error, OPCODE_PUSHVAR, &op, 1, node->offset, node->length);
 						}
 
+						case EXPR_LIST:
+						{
+							// PUSHLST
+							// PUSHINT
+							// <expr>
+							// INSERT
+
+							ListExprNode *l = (ListExprNode*) node;
+
+							Operand op;
+
+							op = (Operand) { .type = OPTP_INT, .as_int = l->itemc };
+							if(!ExeBuilder_Append(exeb, error, OPCODE_PUSHLST, &op, 1, node->offset, node->length))
+								return 0;
+
+							Node *item = l->items;
+							int i = 0;
+
+							while(item)
+								{
+									op = (Operand) { .type = OPTP_INT, .as_int = i };
+									if(!ExeBuilder_Append(exeb, error, OPCODE_PUSHINT, &op, 1, item->offset, item->length))
+										return 0;
+
+									if(!emit_instr_for_node(exeb, item, error))
+										return 0;
+
+									if(!ExeBuilder_Append(exeb, error, OPCODE_INSERT, NULL, 0, item->offset, item->length))
+										return 0;
+										
+									i += 1;
+									item = item->next;
+								}
+							return 1;
+						}
+
 						case EXPR_CALL:
 						{
 							CallExprNode *p = (CallExprNode*) expr;
diff --git a/src/compiler/parse.c b/src/compiler/parse.c
index 0d60e3e..cb6c50c 100644
--- a/src/compiler/parse.c
+++ b/src/compiler/parse.c
@@ -651,6 +651,96 @@ static Node *parse_string_primary_expression(Context *ctx)
 	return (Node*) node;
 }
 
+static Node *parse_list_primary_expression(Context *ctx)
+{
+	assert(ctx != NULL);
+	
+	if(done(ctx))
+		{
+			Error_Report(ctx->error, 0, "Source ended where a list literal was expected");
+			return NULL;
+		}
+
+	if(current(ctx) != '[')
+		{
+			Error_Report(ctx->error, 0, "Got token \"%.*s\" where a list literal was expected", ctx->token->length, ctx->src + ctx->token->offset);
+			return NULL;
+		}
+
+	int offset = current_token(ctx)->offset;
+
+	Node *items = NULL;
+	int   itemc = 0;
+		
+	next(ctx); // Skip the '['.
+
+	if(current(ctx) != ']')
+		{
+			Node *tail = NULL;
+
+			while(1)
+				{
+					// Parse.
+					Node *item = parse_expression(ctx);
+
+					if(item == NULL)
+						return NULL;
+
+					// Append.
+					if(tail)
+						tail->next = item;
+					else
+						items = item;
+					tail = item;
+					itemc += 1;
+
+					// Get ',' or ']'.
+
+					if(current(ctx) == ']')
+						break;
+
+					if(current(ctx) != ',')
+						{
+							if(current(ctx) == TDONE)
+								Error_Report(ctx->error, 0, "Source ended inside a list literal");
+							else
+								Error_Report(ctx->error, 0, "Got unexpected token \"%.*s\" inside list literal, where ',' or ']' were expected", ctx->token->length, ctx->src + ctx->token->offset);
+							return NULL;
+						}
+
+					next(ctx); // Skip the ','.
+				}
+		}
+
+	int length = current_token(ctx)->offset
+			   + current_token(ctx)->length
+			   - offset;
+
+	next(ctx); // Skip the ']'.
+
+	ListExprNode *list;
+	{
+		list = BPAlloc_Malloc(ctx->alloc, sizeof(ListExprNode));
+
+		if(list == NULL)
+			{
+				Error_Report(ctx->error, 1, "No memory");
+				return NULL;
+			}
+
+		list->base.base.kind = NODE_EXPR;
+		list->base.base.next = NULL;
+		list->base.base.offset = offset;
+		list->base.base.length = length;
+		list->base.kind = EXPR_LIST;
+		list->items = items;
+		list->itemc = itemc;
+	}
+
+	return (Node*) list;
+						
+}
+
 static char *copy_token_text(Context *ctx)
 {
 	char *copy = BPAlloc_Malloc(ctx->alloc, ctx->token->length + 1);
@@ -705,6 +795,9 @@ static Node *parse_primary_expresion(Context *ctx)
 				return (Node*) temp;
 			}
 
+			case '[':
+			return parse_list_primary_expression(ctx);
+
 			case '(':
 			{
 				next(ctx); // Consume the '('.
diff --git a/src/debug.c b/src/debug.c
index 0dee9cf..8239246 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -452,10 +452,7 @@ _Bool Debug_Callback(Runtime *runtime, void *userp)
 				{
 					Stack *stack = Runtime_GetStack(runtime);
 					assert(stack != NULL);
-
-					Error error;
-					Error_Init(&error);
-
+					
 					if(Stack_Size(stack) == 0)
 						fprintf(stderr, "The stack is empty.\n");
 
@@ -465,15 +462,7 @@ _Bool Debug_Callback(Runtime *runtime, void *userp)
 							assert(obj != NULL);
 
 							fprintf(stderr, "  %d | ", i);
-							Object_Print(obj, stderr, &error);
-
-							if(error.occurred)
-								{
-									Error_Free(&error);
-									Error_Init(&error);
-									fprintf(stderr, "(unprintable)");
-								}
-
+							Object_Print(obj, stderr);
 							fprintf(stderr, "\n");
 						}
 				}
diff --git a/src/main.c b/src/main.c
index d293088..c6f5056 100644
--- a/src/main.c
+++ b/src/main.c
@@ -227,7 +227,7 @@ int main(int argc, char **argv)
 							RuntimeError_Free(&error);
 							return 1;
 						}
-
+					
 					Object *result = run(runtime, (Error*) &error, exe, 0, NULL, 0);
 
 					if(result == NULL)
diff --git a/src/objects/o_list.c b/src/objects/o_list.c
index cb55cb7..6d1c97c 100644
--- a/src/objects/o_list.c
+++ b/src/objects/o_list.c
@@ -11,6 +11,7 @@ typedef struct {
 static Object *select(Object *self, Object *key, Heap *heap, Error *err);
 static _Bool   insert(Object *self, Object *key, Object *val, Heap *heap, Error *err);
 static int     count(Object *self);
+static void	   print(Object *obj, FILE *fp);
 
 static const Type t_list = {
 	.base = (Object) { .type = &t_type, .flags = Object_STATIC },
@@ -19,6 +20,7 @@ static const Type t_list = {
 	.select = select,
 	.insert = insert,
 	.count = count,
+	.print = print,
 };
 
 static inline int calc_capacity(int mapper_size)
@@ -151,4 +153,17 @@ static int count(Object *self)
 	ListObject *list = (ListObject*) self;
 
 	return list->count;
+}
+
+static void print(Object *self, FILE *fp)
+{
+	ListObject *list = (ListObject*) self;
+
+	for(int i = 0; i < list->count; i += 1)
+		{
+			Object_Print(list->vals[i], fp);
+
+			if(i+1 < list->count)
+				fprintf(fp, ", ");
+		}
 }
\ No newline at end of file
diff --git a/src/objects/o_map.c b/src/objects/o_map.c
index f6db6ca..95a1124 100644
--- a/src/objects/o_map.c
+++ b/src/objects/o_map.c
@@ -13,6 +13,7 @@ typedef struct {
 static Object *select(Object *self, Object *key, Heap *heap, Error *err);
 static _Bool   insert(Object *self, Object *key, Object *val, Heap *heap, Error *err);
 static int     count(Object *self);
+static void print(Object *self, FILE *fp);
 
 static const Type t_map = {
 	.base = (Object) { .type = &t_type, .flags = Object_STATIC },
@@ -21,6 +22,7 @@ static const Type t_map = {
 	.select = select,
 	.insert = insert,
 	.count = count,
+	.print = print,
 };
 
 static inline int calc_capacity(int mapper_size)
@@ -74,6 +76,10 @@ static Object *select(Object *self, Object *key, Heap *heap, Error *error)
 	assert(heap != NULL);
 	assert(error != NULL);
 
+	fprintf(stderr, "Selecting from:\n\t");
+	Object_Print(self, stderr);
+	fprintf(stderr, "\n");
+
 	MapObject *map = (MapObject*) self;
 
 	int mask = map->mapper_size - 1;
@@ -86,10 +92,15 @@ static Object *select(Object *self, Object *key, Heap *heap, Error *error)
 
 	int i = hash & mask;
 
+#warning "TEMP"
+	fprintf(stderr, "-----------------\n");
+
 	while(1)
 		{
 			int k = map->mapper[i];
 
+			fprintf(stderr, "map->mapper[%d] = %d\n", i, k);
+
 			if(k == -1)
 				{
 					// Empty slot. 
@@ -102,6 +113,10 @@ static Object *select(Object *self, Object *key, Heap *heap, Error *error)
 					// Is it the right one?
 					
 					assert(k >= 0);
+#warning "TEMP"
+					fprintf(stderr, "map->keys[%d] = ", k);
+					Object_Print(map->keys[k], stderr);
+					fprintf(stderr, " (of type %s)\n", Object_GetName(map->keys[k]));
 
 					if(Object_Compare(key, map->keys[k], error))
 						// Found it!
@@ -114,8 +129,12 @@ static Object *select(Object *self, Object *key, Heap *heap, Error *error)
 					// Not the one we wanted.
 				}
 
+			int old_i = i;
+
 			pert >>= 5;
 			i = (i * 5 + pert + 1) & mask;
+
+			fprintf(stderr, "%d -> %d\n", old_i, i);
 		}
 
 	UNREACHABLE;
@@ -258,4 +277,19 @@ static int count(Object *self)
 	MapObject *map = (MapObject*) self;
 
 	return map->count;
+}
+
+static void print(Object *self, FILE *fp)
+{
+	MapObject *map = (MapObject*) self;
+
+	for(int i = 0; i < map->count; i += 1)
+		{
+			Object_Print(map->keys[i], fp);
+			fprintf(fp, ": ");
+			Object_Print(map->vals[i], fp);
+
+			if(i+1 < map->count)
+				fprintf(fp, ", ");
+		}
 }
\ No newline at end of file
diff --git a/src/objects/o_string.c b/src/objects/o_string.c
index 075c41b..dfe4b3f 100644
--- a/src/objects/o_string.c
+++ b/src/objects/o_string.c
@@ -94,7 +94,12 @@ static _Bool op_eql(Object *self, Object *other)
 	StringObject *s1 = (StringObject*) self;
 	StringObject *s2 = (StringObject*) other;
 
-	return s1->size == s2->size && !strncmp(s1->body, s2->body, s1->size);
+	_Bool match = s1->size == s2->size && !strncmp(s1->body, s2->body, s1->size);
+
+#warning "TEMP"
+	fprintf(stderr, "%s == %s ? %s\n", s1->body, s2->body, match ? "yes" : "no");
+
+	return match;
 }
 
 static void print(Object *obj, FILE *fp)
diff --git a/src/objects/objects.c b/src/objects/objects.c
index e7d9d27..a65082b 100644
--- a/src/objects/objects.c
+++ b/src/objects/objects.c
@@ -106,22 +106,17 @@ Object *Object_Call(Object *obj, Object **argv, unsigned int argc, Heap *heap, E
 	return type->call(obj, argv, argc, heap, err);
 }
 
-_Bool Object_Print(Object *obj, FILE *fp, Error *error)
+void Object_Print(Object *obj, FILE *fp)
 {
-	assert(error != NULL);
 	assert(obj != NULL);
 
 	const Type *type = Object_GetType(obj);
 	assert(type);
 
 	if(type->print == NULL)
-		{
-			Error_Report(error, 0, "Object %s doesn't implement %s", Object_GetName(obj), __func__);
-			return 0;
-		}
-
-	type->print(obj, fp);
-	return 1;
+		fprintf(fp, "<%s is unprintable>", Object_GetName(obj));
+	else
+		type->print(obj, fp);
 }
 
 Object *Object_Select(Object *coll, Object *key, Heap *heap, Error *err)
diff --git a/src/objects/objects.h b/src/objects/objects.h
index b4beceb..e946905 100644
--- a/src/objects/objects.h
+++ b/src/objects/objects.h
@@ -74,7 +74,7 @@ unsigned int Object_GetDeepSize(const Object *obj, Error *err);
 int 		 Object_Hash  (Object *obj, Error *err);
 Object*		 Object_Copy  (Object *obj, Heap *heap, Error *err);
 Object*		 Object_Call  (Object *obj, Object **argv, unsigned int argc, Heap *heap, Error *err);
-_Bool 		 Object_Print (Object *obj, FILE *fp, Error *error);
+void 		 Object_Print (Object *obj, FILE *fp);
 Object*		 Object_Select(Object *coll, Object *key, Heap *heap, Error *err);
 Object*		 Object_Delete(Object *coll, Object *key, Heap *heap, Error *err);
 _Bool		 Object_Insert(Object *coll, Object *key, Object *val, Heap *heap, Error *err);
diff --git a/src/runtime/builtins.c b/src/runtime/builtins.c
index 88bede3..30a3fb0 100644
--- a/src/runtime/builtins.c
+++ b/src/runtime/builtins.c
@@ -4,11 +4,21 @@
 static Object *bin_print(Runtime *runtime, Object **argv, unsigned int argc, Error *error)
 {
 	for(int i = 0; i < (int) argc; i += 1)
-		Object_Print(argv[i], stdout, error);
+		Object_Print(argv[i], stdout);
 
 	return Object_NewNone(Runtime_GetHeap(runtime), error);
 }
 
+static Object *bin_count(Runtime *runtime, Object **argv, unsigned int argc, Error *error)
+{
+	int n = Object_Count(argv[0], error);
+
+	if(error->occurred)
+		return NULL;
+
+	return Object_FromInt(n, Runtime_GetHeap(runtime), error);
+}
+
 typedef struct {
 	const char *name;
 	int 		argc;
@@ -17,6 +27,7 @@ typedef struct {
 
 BuiltinNativeFunctions builtins[] = {
 	{"print", -1, bin_print},
+	{"count",  1, bin_count},
 };
 
 _Bool add_builtins(Runtime *runtime, Error *error)
@@ -29,7 +40,7 @@ _Bool add_builtins(Runtime *runtime, Error *error)
 	if(dest == NULL)
 		return 0;
 
-	for(int i = 0; i < (int) (sizeof(builtins) / sizeof(builtins[0])); i += 1)
+	for(int i = 0; (unsigned int) i < sizeof(builtins) / sizeof(builtins[0]); i += 1)
 		{
 			Object *name = Object_FromString(builtins[i].name, -1, heap, error);
 
diff --git a/src/runtime/runtime.c b/src/runtime/runtime.c
index d11c182..73cec22 100644
--- a/src/runtime/runtime.c
+++ b/src/runtime/runtime.c
@@ -641,6 +641,30 @@ static _Bool step(Runtime *runtime, Error *error)
 				return 1;
 			}
 
+			case OPCODE_INSERT:
+			{
+				assert(opc == 0);
+
+				if(runtime->frame->used < 3)
+					{
+						Error_Report(error, 1, "Frame has not enough values on the stack to run INSERT instruction");
+						return NULL;
+					}
+
+				Object *col = Stack_Top(runtime->stack, -2);
+				Object *key = Stack_Top(runtime->stack, -1);
+				Object *val = Stack_Top(runtime->stack,  0);
+
+				assert(col != NULL && key != NULL && val != NULL);
+
+				if(!Runtime_Pop(runtime, error, 2))
+					return 0;
+
+				if(!Object_Insert(col, key, val, runtime->heap, error))
+					return 0;
+				return 1;
+			}
+
 			case OPCODE_PUSHINT:
 			{
 				assert(opc == 1);
@@ -713,8 +737,9 @@ static _Bool step(Runtime *runtime, Error *error)
 								return 0;
 							}
 					}
-				else if(obj == NULL)
-					return 0;
+				else 
+					if(obj == NULL)
+						return 0;
 
 				if(!Runtime_Push(runtime, error, obj))
 					return 0;
@@ -780,6 +805,21 @@ static _Bool step(Runtime *runtime, Error *error)
 				return 1;
 			}
 
+			case OPCODE_PUSHLST:
+			{
+				assert(opc == 1);
+				assert(ops[0].type == OPTP_INT);
+
+				Object *obj = Object_NewList(ops[0].as_int, runtime->heap, error);
+
+				if(obj == NULL)
+					return 0;
+
+				if(!Runtime_Push(runtime, error, obj))
+					return 0;
+				return 1;
+			}
+
 			case OPCODE_RETURN:
 			return 0;