I thought of a very important mobile app. It's called Tickle and it helps you escape awkward situations. Using your phone’s accelerometer, Tickle can sense awkward gestures, and in turn, generate a phantom phone call to allow you to gracefully excuse yourself from whatever awkward situation you’re in. A video demo is right here on this page.
Video was shot on a C300PL with an Angenieux 26-76mm T2.6. Edited in Premier and After Effects. Logo in Illustrator.
More info is here: usetickle.com