I have to say, I spend an inordinate amount of time playing both Sumo! and Saucelifter! on my iTouch. While listening to music, usually — multi-tasking in everything, of course.

The games can’t be much more different, in either theme or mechanics. Sumo! is strictly a tap-and-count board game, nicely ported for touchscreen but hardly reliant upon the iPhone/iTouch interface. Saucelifter!, on the other hand, makes good use of the accelerometer for navigation, to complement the touch controls for action. You’re body-slamming belly-to-belly in one, and laser-blasting military armor in the other — all for fun.

If I’m going to endorse any iTunes App, I guess these two would have to be the ones. Neither is free, but considering how many hours I’ve spent playing them, I’d say they’re well worth the purchase price.