I'm currently playing the regulars; Team Fortress 2 and Left4Dead. New downloadable content is in the works for both and I'm sure that will get me to log some more hours with both.
Besides that, I just finished Majesty: The Northern Expansion as it is now offered through Steam. It may be old but I still find it fresh.
I'm also working on GEO-DEFENSE: Swarm for the iPhone/iPod touch which I've found to be much more punishing than the original.
I loved Wind Waker and finally found a copy of Twilight Princess for GameCube a few months ago. I found TP even more enjoyable than WW and would definitely recommend tracking down a copy of it if you can find one, it brought back great memories of playing OoT.