5: Adam Levine
A guy with the means of Levine would surely have an awesome motorcycle collection. That is the case, and Levine has been spotted more than a time or two on one of his custom bikes. He has everything from classic Harley Davidson models to more advanced sports bikes (via Go Rollick).

The Harley-Davidson FLSTF Fat Boy is his bike of choice, with a beautiful sleek black paint job to match. The fat boy was one of the most controversial motorcycles to come out of the historic motorcycle company. This is a perfect bike for someone who is in a band and has a certain level of fame.