Susan Boyle on Britain's Got Talent

I'm not a fan of American Idol, and I had never even heard of its across-the-pond counterpart, Britain's Got Talent, on which Simon Cowell is also a host. But on the recommendation of a friend, I checked out Susan Boyle's appearance on the show earlier this month. If you haven't seen it, please do. I don't want to ruin the surprise, but I will tell you that the look on Simon's face alone is priceless.