basically a sword fighting rock, paper scissors game between 2 people that uses the accelerometer. If you stick your names down Ill give you a coupon code once I sort it out, iron out the bugs and send it to Apple.
Spice it up, have some different themes, get some other proverby things - like Penis, Minge, Hand or something.
Maybe add a scoring system that logs scores for each game [are clients aware of winning hand]? If so, make sure the score is remembered between clients [logging UID?].
Seasonal updates, like Easter/Xmas, or seasonal changes.