Currently playing Sonic 4 on PS3.
While they've nerfed speed ball's speed and the background music to a few stages gets a bit jarring (at least more jarring then Sonic 3) it's pretty entertaining.
The only issues I have are it's not long enough, levels are much quicker to get through then the greatness that was Sonic 2, and the boss at the end kinda sucks when you have to beat his previous incarnations all over again before finally getting to the super fun giant robot of death part.
Overall a solid effort. And I was worried they were just going to butt rape the game.
Other games I'm on-off playing lately:
Dead Space 2
Star Wars Force Unleashed 2
Thinking about getting Red Dead Redemption again (traded it in donkeys ago) so I can get the zombies expansion. Apparently it's bucket loads of crazy and I miss sitting in the saloon with a bunch of guys online playing 'Merc the Sherrifs' as they walk through the door. Lololololo.