Shake Champion
The idea here was originally supposed to be a one-night project to test the Android's motion sensor.
Of course, the concept in my mind was too absurd to go to waste, so it became a full-fledged game with one simple goal: shake the phone as fast as possible.
The game contains three primary settings and two secret modes. It also keeps track of a user's lifetime shakes and contains a global leaderboard.
I'm not sure how many people have played this in a public setting, but I'm willing to bet some strange looks would be involved.
