Mickey Rourke, Jim Parsons, eliminated ``American Idol'' contestant Siobhan Magnus

Cast

• 

  David Letterman

  Self - Host

• 

  Paul Shaffer

  Self -Musical Director

• Alan Kalter

  Self - Announcer (voice)

• 

  Jim Parsons

  Self - Guest

• 

  Mickey Rourke

  Self - Guest

• Siobhan Magnus

  Self - Musical Guest