Artwise? Recently: For Sci Fi I'd say Vanquish, Gears of War 2, Crysis 2, Portal 2, Starcraft 2, and Mass Effect 2. Pretty much every sci fi game in the past 2 years that ends with the number 2.
I'm in the same boat as some of the other folks here. As soon as I decided I wanted to get into games, I quit playing them in any significant capacity. I figured if I had time to play games, I had time to be making myself a better artist. That being said, I do find inspiration in games. Here's a quick list of games to look…