Name	Known for
John Lithgow Self - Host Self - Host See fewer	The World According to Garp (1982)
Kristin Chenoweth Self - Performer Self - Performer See fewer	Pushing Daisies (2007)
Little Big Town Themselves - Singers Themselves - Singers See fewer	Gifted (2017)
Melissa Etheridge Self - Singer Self - Singer See fewer	An Inconvenient Truth (2006)
Train Themselves - Rock Band Themselves - Rock Band See fewer	Abduction (I) (2011)
Smokey Robinson Self - Singer Self - Singer See fewer	Big Time (1977)
Pentatonix Themselves - Vocal Ensemble Themselves - Vocal Ensemble See fewer	The Grinch (2018)
Kenny Rogers Self - Singer Self - Singer See fewer	Polar (I) (2019)
Denyce Graves Self - Mezzo-Soprano (as Denyce Graves-Montgomery) Self - Mezzo-Soprano (as Denyce Graves-Montgomery) See fewer	Les contes d'Hoffmann - I racconti di Hoffmann (1995)
Paulo Szot Self - Tenor Self - Tenor See fewer	Live from Lincoln Center (1976)
Marin Alsop Self - Conductor, Baltimore Symphony Orchestra Self - Conductor, Baltimore Symphony Orchestra See fewer	Great Performances (1971)
The Baltimore Symphony Orchestra Themselves - Orchestra Themselves - Orchestra See fewer	The Sea That Thinks (2000)
The U.S. Navy Sea Chanters Themselves - Singers Themselves - Singers See fewer	Great Performances (1971)
Jordin Sparks Self - Co-Host / Performer Self - Co-Host / Performer See fewer	Sparkle (I) (2012)
Ray Mabus Self - Secretary of the Navy Self - Secretary of the Navy See fewer	Battleship (2012)
Brooks Robinson Self - Baseball Hall of Famer Self - Baseball Hall of Famer See fewer	Great Performances (1971)
Jim Palmer Self - Baseball Hall of Famer Self - Baseball Hall of Famer See fewer	The Naked Gun: From the Files of Police Squad! (1988)
Dorothy Hamill Self - Olympic Gold Medalist Self - Olympic Gold Medalist See fewer	Romeo and Juliet on Ice (1983)
Heidi Johnson-Kilburn Self - Captain, U.S. Army Self - Captain, U.S. Army See fewer	Great Performances (1971)
Lindsey Braisted Self - RN, Johns Hopkins Hospital Self - RN, Johns Hopkins Hospital See fewer	Great Performances (1971)
Jarrod Jackson Self - Baltimore City Police Department Self - Baltimore City Police Department See fewer	Great Performances (1971)
Andrew Belfield Self - Baltimore City Fire Department Self - Baltimore City Fire Department See fewer	Great Performances (1971)
Buck Showalter Self - Baltimore Orioles Manager Self - Baltimore Orioles Manager See fewer	Seinfeld (1989)
Kevin Plank Self - CEO, Under Armour Inc. Self - CEO, Under Armour Inc. See fewer	Child 44 (2015)
Martin O'Malley Self - Governor of Maryland Self - Governor of Maryland See fewer	Ladder 49 (2004)
Jonathan Tucker Self - Baltimore Ravens Kicker Self - Baltimore Ravens Kicker See fewer	Great Performances (1971)
John Astin Self - Director, JHU Theater Self - Director, JHU Theater See fewer	The Frighteners (1996)
Joe Biden Self - Vice President of the United States (as Joseph R. Biden) Self - Vice President of the United States (as Joseph R. Biden) See fewer	Parks and Recreation (2009)
United States Marine Band Themselves - Band (as The United States Marine Corps Band) Themselves - Band (as The United States Marine Corps Band) See fewer	Captain America: The First Avenger (2011)
The Morgan State University Choir Themselves - Choir Themselves - Choir See fewer	Great Performances (1971)
Les Marshak Self - Announcer Self - Announcer See fewer	16th Annual Screen Actors Guild Awards (2010)
Bill Clinton Self - Narrator (uncredited) Self - Narrator (uncredited) See fewer	The President Is Missing