Wall-E. Honestly, it really is the perfect date movie. If you got laid after (or even during!) a viewing, I would not be surprised. I watched it with a bunch of my friends and their significant others, and every time something cute happened at least one girl squealed. The movie definitely clocks in about 3.7 SPM (squeals per minute) throughout its duration.
All joking aside, I really do feel Wall-E to be the top film of 2008. I have no interest in what "the Academy" thinks or says, but I do know around College campus most shout outs are for the Dark Knight. I did think that was a good film, though I felt the pacing was a bit off and the script weak at moments. To up the sacrilegious ante, I felt Harvey Dent (both character and actor) stole the film, not Heath Ledger and his Joker. No disrespect for the departed, either. I mean, Ledger did a phenomenal role and played the part like no other could play it. But there's simply more to Harvey Dent as a character, and the actor did it so well.
Even so, I can't look at it as a better film than Wall-E for so many reasons. Artistically, the film achieves so much using so few words. The robots all convey emotion and plot without any real dialog with each other. It is all conveyed in gestures and creative use of emotion on barely human constructs. The film is fun and funny for any age, addresses multiple issues without standing on a soap box, and delivers a truly heart warming tale. I know that last phrase is used a lot, but this film really does make you feel warm and fuzzy inside. Wall-E is easily Pixar's best film to date, and was the best film released that year.
Plus, there aren't many films you can be forced to watch almost daily for a week and still enjoy. My niece got the DVD for Christmas, and no matter how often I saw it I smiled and laughed each time. I don't think I could say the same for The Dark Knight.