Michael Imperiloli, Josh Joplin Group Mailbag: "My son Tommy turns five on Saturday. Will you come to his party?" Dave says he'd love to, then drives over to the kid's house. The magic of a celebrity guest appearance is hampered, however, when Tommy admits that he wanted Leno instead. Details Casts Title Michael Imperiloli, Josh Joplin Group Genres Talk Comedy Release Date 2001-03-02 Episode Runtime 01 Hours 03 Minutes Season Number 8 Episode Number 111 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)