Disney isn't the only animation company in the world, but they are the greatest. Their achievements go beyond creating the animated feature length film and a worldwide franchise upon that foundation - they've also branched out and inspired a lot of creative talent, in anything from drawn cel animation, stop motion, live action and CGI.
I decided only to include animated "canon" Disney films on this list, but click for the Studio Ghibli list and Pixar list. Number one is my favourite, the last one is my least favourite. Click on List view to read my thoughts.