Pixar's "The Incredibles" (from Brad Bird, who did "The Iron Giant" before this) is simply magnificent. It's a family film in the best sense of the word; everyone will enjoy it immensely for different reasons. The movie is fun for kids (but not too young, 6 or 7 years old it probably the lower limit) and satisfying for adults (and comic book fans of any caliber will love the asides and references).
The film homages a wide range of other storylines, including James Bond, Star Wars, almost every mainstream superhero comic ever written, and Atlas Shrugged (although in a strange way; others have noted that the most Rand-esque character is in fact the villain, but the general themes of individual achievement are in line with Rand).
One bit-part character that I thought particularly funny was their Joker type, a French clown named "Bomb Voyage."
Rating: worth full evening price, more than once. (This is the highest rating. I have seen it 3 or 4 times in the theater now and it just gets better; there's too much going on to take it all in at one viewing.)