Late Show with David Letterman: Amongst the "Items Included in the Rock & Roll Hall of Fame:" Stuff found in ZZ Top's beards, a guitar made of David Crosby's old liver, and Marv Albert's Rock & Roll Bloopers, with Hootie (as in Hootie and the Blowfish) getting hit on the head by a basketball. Meanwhile, in order to prepare for an Olympic diver that will be appearing later, Dave recruits Alan and an audience member to get in a tank.