19x85 - Late Show with David Letterman

Dave welcomes animal expert Jack Hanna, musical guest Patti Smith, and musician Bootsy Collins sits in with Paul Shaffer and the CBS Orchestra. Top Ten Other White House Leaks. Can a camel have a drinking problem? Dave think so in the latest visit from "Jungle" Jack Hanna and his animals. Patti Smith performs the title track from her album, "Banga."