The Brain is probably a little too over-obvious for its own good […], but there’s an immensely winning spirit to this film that keeps the soufflé mostly light and airy. — Jeffrey Kauffman

The picture moves with such brazen speed and is played with such zestful verve that Mr. Oury’s driverseat strategy and cunning can be easily taken for granted. But watch closely. Some piece of funny business, subtle or broad, continually dots a corner of the screen as the story spurts forward front and center. — Howard Thompson

Whatever the movie may lack in originality it more than makes up for with some great performances, some interesting characters and a ridiculous amount of good, goofy fun. — Ian Jane