The first I watched was the Curious Case of Benjamin Button. The story, of a man aging backwards through the changing times of the twentieth century, has a strong influence on the style of the film, part yarn, part strange romance, and part historical retrospective. There are a lot of elements in common with Forrest Gump, although its less overtly comic. Its well made, and well told, and has moments of real compassion.
The next I watched was the one not currently in the top 250 (and probably not likely to appear there, albeit not for lack of merit. Lars and the Real Girl is a strange film about a man who develops a delusionary relationship with a doll, and the reaction of the community in which he lives. This is a great example of a very simple film done very, very well. The performances are note-perfect, and the story arcs naturally and interestingly.
The third film I watched was The Wrestler. I had looked forward to this film based on the acclaim given to the performance of Mickey Rourke, its lead. It is a good performance, too; it really rings true with the strength and love that the character has for his sport/profession, and the way he reacts to crowds, and his striving and failing despite himself as a person, particularly in his relationship with his daughter. The ending is really tragic, but very true, which is something I've always loved in a film. I'm a sucker for tragedy.
I would have put all of these films as more meritorious than Slumdog Millionaire for Best Film of 2008. Rourke's performance was really good, but I think I'd still put Ledger's in The Dark Knight, and Langella's in Frost/Nixon, as my favourites for 2008. Brad Pitt got a nomination for Benjamin Button, but I don't see it. Outside of 12 Monkeys, Fight Club and Snatch, he generally plays too close to type for my tastes.