I've gotten hooked on DC Universe.
It plays kinda like those superhero sandbox games (like inFamous and Prototype) only multiplayer and the amount of powers you can choose from is awesome.

I think the different gameplay is the only reason I could get into it, I really got sick of the MMOs that were mostly just a bunch of clicking, drag clicking and keyboard shortcuts. That, and it's on PS3 as well as PC which means I can play it as easily as turning my TV and PS3 on.