To me the most instantly appealing title has to be Mercury. I\'m prepared to look mighty silly playing any version of the game (not DDR-silly, but close).
We all know mercury divides infinitesimally, but in the PSP version at least, your blob consists of just 16 smaller ones... it might be dodgy or great fun... I\'m eagerly awaiting someone to blurt out some hands-on impressions. There\'s console versions coming out too, with motion sensitive controller paks.