I've gotten to rediscover some PC games since I have more free time, and there's an experimental one that's just come up--
Cortex Command.
Imagine Worms in real time with Advance Wars-inspired pixelart--been done, you say? How about each and every single pixel has physics? Yes, you can kneecap an enemy and see them try to lurch around without legs. Or dig a tunnel(which you have to do anyways, to mine gold for cash) to get around a base defense.
Plus, you can
have inappropriate fun with heavy machinery.
It's still a
work-in-progress, but it's got potential, and I suspect it'll end up on the 360 fairly shortly.
I'm also getting addicted to
Puzzle Pirates, but everyone knows about that.