I went to the NY Tech Meetup last night. One of the projects demoed was The Imaginary Marching Band. Built with Arduino chips and a few sensors stuck onto some white gloves, the tech allows the performers to play via gestures and breath sensors. Don't take my word for it, check out this video I took of them performing:
Also entertaining was Ad Runner, click here to play it. It's an ad-api driven webgl game where you have to dodge ads. Hit an ad? You get taken to the ads click thru. Funniest question asked the guys if they would get paid for the click-thru - it's only a beta ad api they are using, but if it were real they say they would. Nice.
