Actors Who Sing
By MSN Music

Billy Bob Thornton may have earned his first showbiz laurels as a screenwriter and actor, but the Arkansas native takes his music seriously -- very seriously, judging from his April 8, 2009, confrontation with a Canadian radio interviewer who insisted on asking Thornton about his film career instead of his band, the Boxmasters. Thornton wound up alienating Toronto audiences, but that didn't stop him from resuming a tour as opener for Willie Nelson. (RD/Kabik/Retna Ltd.)