Mindless time killer - RIFT (PC)
I've been addicted to MMOs for some time, and this is a solo-friendly F2P one that has kept me hanging around and putting a few bucks into it every now and then. I mostly farm materials and craft at the moment, while sometimes leveling up my alts a bit.
Source Material - Castlevania: Symphony of the Night (port on 360), Shantae: Risky's Revenge (iOS), Dust: An Elysian Tale (PC)
I'm working on a Metroidvania game in my spare time, playing through these for some inspiration; what works, doesn't work, that kind of thing. That and they are damn good games.
Feeling Competative - Street Fighter IV (360), Injustice: Gods Among Us (PC)
Just when I feel like getting into a good old fight with folks.