Robert Downey Jr, Martin Short, and Kris Allen

Cast

• 

  David Letterman

  Self - Host

• 

  Paul Shaffer

  Self -Musical Director

• Alan Kalter

  Self - Announcer (voice)

• 

  Martin Short

  Self - Guest

• 

  Robert Downey Jr.

  Self - Guest

• Kris Allen

  Self - Musical Guest