AutoTune - Music Tool Makes Everyone Singer Sound Good

Have you been following the Auto-Tune saga in music? Auto-tune automatically corrects pitch so almost anybody can sing and sound good. It can even take spoken voice and make it sound like a song. Now there's an iPhone app for it instead of having to buy the equipment/microphone.

Here is a funny example (one with the microphone and one with the app) by "T Pain", the rapper who popularized it.

http://www.youtube.com/watch?v=ITT6bYYGVfM&feature=related