I stepped up to the playable demo of Sega's Sonic Colors for the Nintendo Wii expecting disappointment, and the fact that it was the one kiosk in Nintendo's booth that did not have a line of people waiting to play looked to be a sign of trouble brewing.  Instead I was pleasantly surprised to find that the upcoming adventure is actually a lot of fun.  It's basically Sonic Unleashed's speedy daytime stages of joy with both 3D and 2D segments mixed up with several gimmicks from both Super Mario Galaxy 2 games (such as the drilling element).  The zone I played was vibrant, featured multiple paths, and really felt like what I've always thought a modern 3D Sonic the Hedgehog game should be.  Assuming that there isn't some horrible catch not present in the demo, don't count Sonic Colors out just yet.  While Sonic the Hedgehog 4 has plenty of hopes and dreams pinned on it, it looks like these Colors are in for quite a run.