Heya,
Lots of games. Crysis, Metro, Stalker series, Just Cause 2, Any of the Call of Duty series and spin offs (BC2), etc.
And on the note about StarCraft2, it's actually heavily benchmarked because a lot of people want highest settings possible and want it to be able to keep the frames up even under heavy, heavy stress. The GPU is not the stress point in SC2, it's the CPU generally. So if you want to see if your Quad/Hex build can handle high end SC2 battles without dropping below, say, 30FPS or the grail of 60FPS, that's something to test. It's highly tested because it's a competitive game, so people build machines around never dropping below 60FPS for example.
Very best,