First Blow: Asked about Toby Keith's post-Sept. 11 anthem, 'Courtesy of the Red, White and Blue (The Angry American),' Dixie Chicks lead singer Natalie Maines said, "It's ignorant, and it makes country music sound ignorant." Toby labeled Natalie "a lousy songwriter" and toured with a backdrop depicting her consorting with Saddam Hussein. She then wore a T-shirt bearing the not-so-subtle message "FUTK." Final Round: In 2008, Al Gore invited the two to "make nice" by appearing together in PSAs for climate change. They agreed, but the plan was scrapped soon after, with both sides claiming scheduling conflicts.