Preview Pixar's latest

Just wanted to share the trailer for the upcoming Disney-Pixar movie Up. The trailer opens with a brief look at previous Pixar movies, just to show why you can expect this one to be good as well. I think the only Pixar movie I didn't see was Cars (because it just didn't appeal to me). My favorites are probably Toy Story 2 and WALL-E. What's your favorite Pixar movie?