I like to use very aggressive ipenings like the Sicilian Najdorf (old main line as white), Benko Gambit, Scotch Gambit, and the Blackmar Diemer Ryder Gambit. These gambits may be a little unsound, but at my level (about intermediate ~1500), soundness shouldn't matter too much. I'm also going to get a USCF rating some time this summer!
I am also a violin player.
Check out my violin recital of June 10, 2012:
I also made a video on the Benko Gambit: