If you can find someone who will slow dance with you while simultaneously acting as a human Pong paddle, you may want to consider marriage. Ed Keeble invented just such a litmus test -- a pair of hoodies outfitted with small microcontrollers called LilyPad Arduinos. The Pong game takes place on your dance partner's chest, and you tilt your partner to move your paddle [via Technabob]:

This is both the nerdiest way to play a video game at a school function and the smartest way to stare at your date's chest the entire time.