I've been listening to Foals a lot lately. Their album What Went Down is really good - one of those rare albums where I actually enjoy all the songs, so I can play the entire thing in the background while I work on stuff/play games. Mountain At My Gates is my favorite. Blue Öyster Cult and Dio have been getting their fair share of plays in my iTunes lately, too. I like to mix old and new stuff when jamming.