David Schwimmer's top lookalike, one Mr Ernie Winklestien, had a very lucrative career ahead of him doing supermarket openings and walk-ons, pretending to be David Schwimmer of "Friends" fame. The likeness was uncanny - even side by side you would have a hard time telling them apart. He even sounded like David Schwimmer.
At the height of his lookalike career, Ernie was invited to appear at a party for wealthy business tycoons who were all huge fans of "Friends". The party was held on a luxury yacht out at sea (most likely to take advantage of international waters laws). All was going great and Ernie had done his Ross impersonations and was happily getting drunk, when he stumbled and fell overboard. Unfortunately, nobody had noticed him fall overboard, so he was left to try and get back on the boat himself. Sadly, he didn't make it - it turns out he was a pretty poor Schwimmer after all.