Elton John isn't exactly known for keeping his opinions to himself and he certainly isn't one to stand down in a fight. Most recently, the superstar filed suit against The Times of London for mistakenly claiming he was somehow involved in offshore tax evasion. This isn't the first time he’s gotten into a scuffle with one of Murdoch's newspapers, not to mention a fellow celebrity or even the music industry. Elton has a long history of cat fights. We look at some of the Rocket Man’s biggest quarrels with fellow stars, from Simon Cowell to Keith Richards.