R.E.M.'s Mike Mills Announces David Letterman's Retirement

Tonight, two former R.E.M. members, Mike Mills and Peter Buck, will be on the Late Show With David Letterman. They’re backing up the night’s musical guest, singer-songwriter Joseph Arthur. Letterman tapes his show early in the day, which means those guys were on hand for something of a landmark show-business moment: Apparently, David Letterman is