Since last night’s Glee pretty much redefined the word “doozy,”let’s just skip the capsule plot summary and get straight into the song, “What Doesn’t Kill You (Stronger),” by Kelly Clarkson. (That is, not the song “Stronger” by R. Kelly, and not the song “Stronger” by Britney Spears, which caused some confusion around Vulture HQ.) Although it seems to speak mostly to high school students with lots of feelings, we did manage to drag up a few competitive versions: Sarah Geronimo, for instance, who is apparently the next big thing. Also, J.Fla is welcome at our house any time. Watch them all below and decide, who did it best?