Paul Newman, Clay Aiken Biff spends a day on the campaign trail with Howard Dean; Gerard stands in for unavailable Survivor loser Rupert Boneham; Paul Newman discusses all things auto racing; Clay Aiken sings "Invisible" from his CD Measure Of A Man. Details Casts Title Paul Newman, Clay Aiken Genres Talk Comedy Release Date 2003-11-24 Episode Runtime 01 Hours 03 Minutes Season Number 11 Episode Number 51 Production Companies Worldwide Pants, CBS Entertainment Productions, CBS Productions, CBS Studios David Letterman Self - Host Paul Shaffer Self -Musical Director Alan Kalter Self - Announcer (voice)