Windows Phone 7 "I Need This App" contest Answered

Some of you probably already know this, but Windows Phone is having an app contest where you post an idea for an app and if you win they give you $5K and dev your app for you. These are some that I thought were cool. Post 'em if you got 'em :D
BTW, you can vote anonymously.

phone as POV display:   http://tinyurl.com/wp7POV
level up your ingame characters from your phone:    http://bit.ly/wp7game
phone as 360 controller:    http://www.windowsphone7.com/longlink