It's actually a little unfair to give Bon Jovi third billing here, since they sang his song, and he presumably organized the whole thing. So, revise: last night Bon Jovi, Taylor Swift, and Prince William sang a trio of "Livin' on a Prayer" at a gala for the Centrepoint Charity. Really this just means that Prince William and Taylor did backup on the ohhh-OH!s, but the video would indicate that Prince William, the future King of England, actually does know all the words to "Livin' on a Prayer." He even does that "come on, louder" hand gesture to the crowd at one point, like he understands that this is a song meant to be screamed by drunk people. Taylor, for her part, does a very good, ahem, impression of "Overenthusiastic Girl at Karaoke." What is the name of that swirl move, does anyone know?