This is one of the scariest and funniest and campiest horror/monster movies I have ever seen. The title sort of says it all - a mad scientist keeps a brain alive and locked in a closet even after its body is destroyed. Of course things go horribly wrong for the doctor and anyone unlucky enough to get near him. The acting is just as good as it needs to be and the director knew he was just putting together a screamer so he just has fun with it. The result is a great early 1960s popcorn flick that I could watch again and again.