This video clip, from PBS' Nova shows you just how some of the "music" stars of the day can make beautiful music with little to no talent. Is it cheating? Uh, yeah. It's like PhotoShop for music.
At least when Cher and Madonna have used it, it was obvious, tweaking their voices into robotic pitches. Of course, they could have more subtly sweetened their voices with Auto-Tune on other songs without telling us.
Found at: Joe.My.God.