I don't know about you guys, but before I actually played it, I was pretty sure Disney Epic Mickey was an old-fashioned 3D platformer, but with some interesting art and story choices.  Apparently it's a bit more than that.  Did you know, for example, there are hub worlds?  And side-quests?  The hub world I saw was based off of Adventureland, the themed area of Disneyland, complete with a Treehouse and an Enchanted Tiki Room.  There you can talk to different characters who will give you quests, or you can proceed with just the main quest to move on.  For the demo, we only saw one very short side-quest, but it completely blew me away.  
 
So this game has a lot more depth than you would expect.  The side-quest was that Goofy (under the name Tiki Sam) wants Mickey to find three tiki masks hidden in the hub world.  The demonstrator of course knew where a mask was, and we went straight there and retrieved it.  Now as you may have heard, Mickey can either shoot paint thinner with the Z trigger (to destroy cartoons) or paint with the B trigger (to restore cartoons).  After giving Tiki Sam the first mask, instead of looking for the others, you can go around the back of his hut, melt the wall with paint thinner, steal the mask, and then keep giving him the same mask over and over until he's satisfied.  If you accidentally give it to him four times, he catches on to your scheme and turns against you.   I don't know about you, but I don't think I would ever even have thought of attempting something like that, and now I can't wait to get my hands on the full game and see what other madness lies within.
 
The demonstrator also revealed that the Steamboat Willie level from the trailer is a bonus level, and that there are something like 40 2D levels just like that based on different classic Mickey Mouse cartoons.  I have a feeling there is a lot to do in this game besides the normal platform levels, and I really want to see more.  My only wish is that it were available on an HD system so we could get all the beauty it wants to offer.
 
 If you have any questions, comment and I will try to answer.