One of our favourite summer shows is "America's Got Talent". It is produced by Simon Cowell. He is not allowed to be on the show as Fox owns all broadcast rights to Cowell. But he is on the British version of the show, "Britain's Got Talent".
I am unable to embed this video, and I regret that; Youtube is making more and more of its entries unembeddable, if that is a word. But I can provide the link. If this doesn't prove to you that you can't judge a book by its cover; that you should never underestimate anybody, ever, then nothing will.
Meet Susan Boyle.