Cool story about Kaymer that someone just told me, who witnessed it first-hand:
He was in Germany over the Easter holidays and worked on the range for the last couple of days with his coach. Nothing unusual about that, except that he went to his old club, which has just a regular, run-of-the-mill public driving range, where everyone can go and practice. The current world #2 personally queued up in the Pro shop, loaded up his chip card and got himself a bucket full of beat-up range balls - just like you and me! No complimentary Pro V1s or caddies shagging his balls, no fences or ropes, he took his place between two 24 handicappers and started peppering the 200 yards sign with a mid iron. Nobody noticed.
Ulrich