I've shared this with my co-students and they seem to like it a lot so I'll try to make some more specific ones in the future.
Anyway here's part 1:
Also, I came across this great blog called Frame by Frame where you can see some sequences of animation movies frame by frame and in .gif. Very interesting to take a look at and see how great animators tackled some of their shots.
Go check it out here: http://framexframe.tumblr.com/