Agree 100%. Not only is it the best animated feature of the year (Toy Story 3 was good but not great), but probably one of the best animated features ever. It does a better job of character development than most movies and the main character is easy to relate to, especially for those of us that are categorized as nerds (social outcast, smart, good with gadgets, likes the hot chick, etc). My almost 3 year old son loves it and I don't mind watching it with him dozens of times.
As for the other movies, I have yet to see most of them, but will eventually. I did see The Social Network in the theaters and thought it was good considering the topic, but not on the same level as previous winners. It's worth watching, but I don't think it's worthy of winning.