For anyone that didnt know, one of the sonic fan games has had a demo released. Check it out and be amazed at how much better it is than Sonic 4
Ive given it a playthrough, and its pretty awesome. Some things look a little weird, and its a bit bizarre playing Sonic with a keyboard (I couldnt get my 360 pad to work), but overall its beautiful and the physics feel right. Its really awesome stuff considering it was made by only 2 guys (one artist and one programmer).
Who knows, maybe some fans will eventually make a good streets of rage fangame too..