Name	Known for
Jay Leno Self - Host Self - Host See fewer	The Tonight Show with Jay Leno (1992)
Rickey Minor Self - Bandleader Self - Bandleader See fewer	Poseidon (2006)
Robert Downey Jr. Self - Guest Self - Guest See fewer	Iron Man (2008)
Abigail Breslin Self - Guest Self - Guest See fewer	Little Miss Sunshine (2006)
Alison Krauss Self - Musical Guest Self - Musical Guest See fewer	O Brother, Where Art Thou? (2000)
Union Station Themselves - Musical Guest Themselves - Musical Guest See fewer	Twister (I) (1996)
Sam Bush Self - Musical Support Self - Musical Support See fewer	Bouquet final (2008)
Herman Cain Self (archive footage) Self (archive footage) See fewer	No Time to Run (2020)
Jerry Douglas Self - Union Station Self - Union Station See fewer	Fire Down Below (1997)
Jamie Foxx Self - FunnyOrDie Tribute to Robert Downey Jr. (archive footage) Self - FunnyOrDie Tribute to Robert Downey Jr. (archive footage) See fewer	Collateral (2004)
Mel Gibson Self - FunnyOrDie Tribute to Robert Downey Jr. (archive footage) Self - FunnyOrDie Tribute to Robert Downey Jr. (archive footage) See fewer	Braveheart (1995)
Ron Paul Self (archive footage) Self (archive footage) See fewer	Brüno (2009)
Garry Shandling Self - FunnyOrDie Tribute to Robert Downey, Jr. (archive footage) Self - FunnyOrDie Tribute to Robert Downey, Jr. (archive footage) See fewer	The Larry Sanders Show (1992)
Sting Self (archive footage) Self (archive footage) See fewer	Dune (1984)
Wally Wingert Self - Announcer (voice) (uncredited) Self - Announcer (voice) (uncredited) See fewer	Final Fantasy VII: Advent Children (2005)