10. Eminem
The best-selling music artist of the current millennium in the US, Eminem burst onto the scene in the late-90's, having toiled for years honing his craft. The Slim Shady EP was released in 1999, and the only way was up for Marshall Mathers once the potency of his rhymes and songs caught on. In 2009, during a UK tour, the rapper stopped off in London and decided to do a little shopping. Asking the Selfridges department store to stay open a few hours longer, simply so he could browse in piece, the musician also bizarrely strolled around the streets of the city wearing a Rey Mysterio Mask, much to the bemusement of the mainstream press. Striking up a friendship with Mysterio, Eminem became a big wrestling fan. It's unclear whether or not Mathers was a grappling fanatic as a child, although it's interesting to note that several of his tracks contain wrestling-related lyrics. In one verse, the rapper even threatens to turn into Hulk Hogan, which is a truly frightening thought.