(Video Link)
Incredible Ape, a company consisting of Josh Schonstal and Ian Brock, developed a computer game called Pew Pew Pew. It's a simple shooting game. When you need to fire your weapon, just say into the microphone "pew pew pew". The above video is from a demonstration at Global Game Jam 2011.
http://incredibleape.com/blog via DVICE
http://www.tvparty.com/lost-tv-pow.html