After the GG I'm a bit surprised, so I can rate the nominees which I've seen:
Up in the Air - very good movie, George did a great job, this is another hit from Reitman. 8,5/10
(550) Days od Summer - this is not a love story and it's interesting, very realistic. 7/10
It's Complicated - it's okay, a mix of comedy and drama, Meryl Streep was at her best again. 6/10
Up - this animated feature is emotional, funny and a pure joy to watch, one of the best movies from Pixar, I greatly enjoyed it. 8,5/10