Chances are you've already seen the video of Susan Boyle's audition for Britains Got Talent. But if you haven't, you should watch. Right now. I'll wait.
If that didn't make you grin, I don't know what will.
Funny thing, though. All those people in the audience assumed she'd make a fool of herself. More than that, they were looking forward to laughing at her for it. Yet, a half-second in, when it became apparent that she was really, really good, the crowd went wild. Every person there became her new best friend.
Maybe any hardened, mean-spirited cynic will turn into a marshmallow after hearing somebody sing like that.