We have been a fan of Pixar since Toy Story and Luxo Jr. However, Up has definitely upped the ante!
Rarely do we "share" a movie experience anymore with our fellow moviegoers. In this day of DVD"s and Blue Ray, sitting a room with others and sharing a movie seems lost. That all changed after seeing Up. The entire theatre was laughing and having a great time. The animation is flawless (Thanks Render Man 2).
Character delveopment was very well done and the cross -appeal to the older generation by having some of the characters look like stars gone by also works (they even got Kirk Douglas' chin dimple) , music score and story, second to none.