I discovered Geri's game on the pixar website and it is most definitely the most beautiful animated short I have ever seen.
Both the story and animations are of extraordinary quality. And also the editing is outstanding; no wonder they received the 1997 Oscar!
I you haven't seen it yet go and check it out at pixar.com, there you can also find lot's of other short films. Luxo jr. for instance is very nice too, and features the jumping creature that is in their logo.
It is a pity that films of this narrative and visual quality are very rare. but luckily we have pixar.