Marilu Henner, Jim Lovell Biff goes to Texas to learn to be a cowboy, and to make tonight's audience (residents of Houston) feel more at home, Lyle Lovett shows up to sing an old Hank Williams song, with Biff riding his horse onstage. Details Casts Title Marilu Henner, Jim Lovell Genres Talk Comedy Release Date 1998-05-08 Episode Runtime 01 Hours 03 Minutes Season Number 5 Episode Number 143 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)