In true Python alum fashion, this movie is rewatchable (despite what Maltin says) and a lot of fun each time you watch it. Tim Robbins does his usual good job in a light-hearted but sensitive role; and possibly the best line of the movie is John Cleese's reaction to Robbins when Robbins *believes* himself to be invisible, declaring: "Now you see me, now you don't!" Cleese's reaction has me laughing out loud every time.
Behind all the fun and games, though, Terry Jones has done some pretty darn clever commentary on belief systems and epistemology; the fact that you can only be affected by that particular brand of magic in which you believe is a strong idea which rings nicely throughout the movie. (The addition of the priest character drives the point home nicely.) Interesting ideas, which I'd bet are ignored by most people just out for a good time (which is okay too, since it's a funny movie).
