Four words people: World of Warplanes Beta
I think of [the Internet] as a grisly raw steak laid out on a porcelain benchtop in the sun, covered in chocolate hazelnut sauce. In the background plays Stardust’s Music Sounds Better With You. There’s lots of fog. --tomeoftom
Dungeon Defenders. And since the beta forums are now public, apparently, I'll go ahead and say Monaco is great with a few gamepads.
Castle Crashers, too.
EDIT: I think SpyParty supports gamepads, too.