I know this is super late, but I did see all the Best Picture nominees before the Oscar ceremony. My thoughts, in brief:
Sean Penn gives a beautiful performance, as does Josh Brolin. The pacing was a little off (particularly during the portions dealing with the second boyfriend), but the ending was very powerful.
A very simple, yet compelling film. The performances are tight. Ron Howard's direction is controlled and appropriate. I wouldn't expect any less from the director of Apollo 13, A Beautiful Mind, and Cinderella Man.
A beautiful movie, though the game show framing mechanism is both creative and a little forced.
My favorite of the 2008 Best Picture nominees. This film shows how personal pride leads one woman to destroy hundreds of lives. It's examination of German guilt for the Holocaust, both for individuals and the nation as a whole, is both fascinating and sobering.
The Curious Case of Benjamin Button
Interesting, but way too long for what it was. I was surprised that the movie was framed by Hurricane Katrina. I suppose they felt they had to deal with that, given that the film is very much about New Orleans.