Although I've played Diablo III on PC I picked up an Xbox 360 version yesterday and I have to say it is excellent, better than the PC version thanks to the easy controls and everything having been streamlined and honed. It's a great straightforward RPG-em up. Loads of enemies to defeat and treasure to find and being on console it's good for a quick few minute blast or longer play session. The console version doesn't have the always online requirement either and multiplayer co-op in front of the same TV is probably the best mode of all.
Well worth picking up a copy especially if you haven't played Diablo III before but also if you have and want to give this addictive little action RPG another run.