American Idol Contestants' Greatest Hits

Kelly Clarkson, "Since U Been Gone"

The original American Idol winner, Kelly Clarkson, has come out with hit after hit, and while it's hard to narrow it down, "Since U Been Gone" ranks at the top of our playlist. It's one of those songs that's always appropriate to play. It makes you run a little faster on the treadmill, jump a little higher at the bar and sing a little louder in the shower. Even if the person you're dedicating this song to can't hear you, singing this angst-ridden pop/rock tune aloud gives new meaning to the phrase "girl power."