This is the coolest thing I've seen on the net in a while. I hope its not a repost:
Part 1: http://www.deviantart.com/view/5142652
Part 2: http://www.deviantart.com/view/5143991
Part 3: http://www.flashplayer.com/animation...brothers3.html
I'm still looking for part 4, I don't know if its done yet, will post it when I find it. The above is about 15 mintues in total.
Edit: can't find part 4, I think its still in progress.