OK, so you've heard of celebrities being killed, and you've even heard of celebrities killing people...but have you heard about celebrities killing other celebs? Believe it or not, it has happened. Here are 11 of their stories: 1. Legendary record producer Phil Spector invented the Wall of Sound and shaped records by the Ronettes, the Beatles, Tina Turner , and Leonard Cohen. But on February 3, 2003, a 63-year-old Spector shot and killed B-movie star Lana Clarkson, 40. Clarkson made her film debut in Fast Times at Ridgemont High , guest starred on TV shows like Three's Company and Night Court , and had a successful run in Roger Corman films aimed at young men, like Barbarian Queen and its sequel (a role Corman called "the original Xena"). Her acting career faded in her thirties, and the night she met Spector she was 40 years old and working as a hostess at the House of Blues in West Hollywood.…