Path of Exile's an ARPG that just went into open beta recently. It's geared more towards the harcore-diablo 2 fans, and the people disappointed by Diablo 3. I have not played too much of it to give an opinion on it (I usually like to play games for 2-3 hours before I consider any input I say as valid, even the color schemes, sounds, etc.)
However, it's worth looking at if you're looking to kill some time and want to try something relatively new. It's free to download and play. (For now, anyway, since Open Beta's whole purpose is such) I know a few of you were into Diablo 2, so it's maybe something you didn't hear about.
Game actually looks pretty cool! Very much more like diablo 2 than diablo 3 is. Here's a big ol' Cynicalbrit playthrough with one of the devs commenting on the game features: http://www.youtube.com/watch?v=97SskaQuijo