Kent Hovind, for years has offered a 250,000 dollar reward for any real proof of evolution. That reward, has never been claimed.
And a number of scientists have asked him to sign a legally binding contract saying that if they give him the proof, he'll give them the money. And every time they've done that, the stupid coward has run away as fast as his frightened little legs will carry him. And he is now in jail for fraud, which is where he belongs.