Monsters, Inc.: I might have a bit of a bias because this was the first movie I ever saw in a movie theater, however Monster's Inc.
Toy Story 3: This is the best movie I have ever seen in my life! Because the strategy used in this movie is amazing. Very very nice movie.
Wreck-It Ralph: It has a nice story, and I absolutely love all the characters. Fix-it Felix is my personal favourite.
Up: Now this may surprise most people but I think Up is a bit overrated. This is coming from someone who genuinely loves Up. The first like 10 minutes of the movie is art and film at its peak.