Vespa is to scooters what Xerox is to photocopying. Or Kleenex is to tissues. The two concepts have become so inextricably intertwined that many people who don't know better refer to all scooters as "Vespas," regardless of their actual brands. You don't become the most-loved scooter in the world without recruiting a celebrity following along the way. Here are a few of our favorite celebrities on Vespas.