Credits

• 2024 · LIZA: A Truly Terrific Absolutely True Story as Self
• 2023 · Being Mary Tyler Moore as Self (voice)
• 2022 · The Old Man as Morgan Bote
• 2021 · tick, tick... BOOM! as "Sunday" Legend #4
• 2020 · Stars in the House as Self
• 2019 · On Broadway as Self (archive footage)
• 2019 · Fiddler: A Miracle of Miracles as Himself
• 2019 · It Takes a Lunatic as Self
• 2014 · Trailblazer Honors as Self - Presenter
• 2014 · Private Screenings: Robert Osborne as Self
• 2013 · Broadway Musicals: A Jewish Legacy as Narrator
• 2009 · Warehouse 13 as Monty the Magnificent
• 2008 · Hollywood Singing and Dancing: A Musical History as Self
• 2008 · Choke as Phil
• 2008 · Hollywood Singing and Dancing: A Musical History - The 1920s: The Dawn of the Hollywood Musical as Self
• 2007 · Private Practice as Dr. Alexander Ball
• 2007 · Drama, Tanz und Beine as Narrator
• 2006 · Brothers and Sisters as Dr. Jude Bar-Shalo
• 2005 · Grey's Anatomy as Dr. Singer
• 2004 · House as Ezra Powell
• 2004 · Broadway: The American Musical as Self
• 2003 · Broadway's Lost Treasures as Host (segment "Leading Men") / Emcee (segment "Cabaret")
• 2003 · 111 Gramercy Park as Hornsby
• 2002 · Short Cuts as Tom McQuilten
• 2002 · The Making and Meaning of 'We Are Family' as Self
• 2001 · Law & Order: Criminal Intent as Milton Winters
• 2001 · Alias as Another Mr. Sloane
• 2001 · Crossing Jordan as Carl Meisner
• 2001 · On the Edge as Dr. Mensley (segment "Reaching Normal")
• 2001 · Further Tales of the City as Guido
• 2000 · CSI: Crime Scene Investigation as Hank Kasserman
• 2000 · The Fantasticks as Amos Bellamy
• 2000 · Dancer in the Dark as Oldrich Novy
• 1999 · A Christmas Carol as The Ghost of Christmas Past
• 1997 · The Music of Kander & Ebb: Razzle Dazzle as Self
• 1997 · Buffy the Vampire Slayer as Doc
• 1996 · My Friend Joe as Simon
• 1996 · The empty mirror as
• 1995 · Venus Rising as Jimmie
• 1995 · The Wizard of Oz in Concert: Dreams Come True as Professor Marvel / The Gatekeeper / The Carriage Driver / The Palace Guard / The Wizard of Oz
• 1995 · The Outer Limits as Dr. Nathan Seward
• 1995 · The Outer Limits as Gideon Banks
• 1995 · The Dangerous as Flea
• 1995 · Star Trek: Voyager as Caylem
• 1994 · Touched by an Angel as Ronald
• 1993 · Blue Heelers as
• 1993 · The Music of Chance as Willy Stone
• 1992 · The Player as Joel Grey
• 1992 · Robert Altman's Players as Self
• 1991 · Kafka as Burgel
• 1991 · Marilyn and Me as Johnny Hyde
• 1991 · Brooklyn Bridge as
• 1990 · Night of 100 Stars III as Self
• 1987 · Witnesses to the Holocaust: The Trial of Adolf Eichmann as Narrator
• 1987 · Queenie as Aaron Diamond
• 1986 · Matlock as
• 1985 · Remo Williams: The Adventure Begins as Chiun
• 1984 · The Compleat Gilbert & Sullivan as Jack Point
• 1982 · The Yeomen of the Guard as Jack Point
• 1982 · Night of 100 Stars as Self
• 1980 · Charlie Chaplin: The Little Tramp as Self - Host
• 1979 · CBS News Sunday Morning as Self
• 1978 · Dallas as Adam
• 1976 · The Seven-Per-Cent Solution as Lowenstein
• 1976 · The Muppet Show as Self - Special Guest Star
• 1976 · Alice as
• 1976 · Buffalo Bill and the Indians, or Sitting Bull's History Lesson as The Producer (Nate Salisbury)
• 1976 · Live from Lincoln Center as Joel Grey
• 1974 · 'Twas the Night Before Christmas as Joshua Trundle (voice)
• 1974 · Dinah! as Self
• 1974 · Man on a Swing as Franklin Wills
• 1974 · Flick Flack as
• 1972 · The Julie Andrews Hour as Self
• 1972 · Man On A String as Big Joe Brown
• 1972 · Cabaret as Master of Ceremonies
• 1972 · The Recreation of an Era as
• 1971 · The Sonny & Cher Comedy Hour as
• 1970 · Night Gallery as Andrew MacBane
• 1970 · George M! as George M. Cohan
• 1968 · The Dick Cavett Show as Self - Guest
• 1967 · The Carol Burnett Show as Self - Guest / Various Characters
• 1967 · Ironside as Mike Yeager
• 1964 · What a Way to Go! as Patron (uncredited)
• 1963 · Vacation Playhouse as Freddy Rockefeller
• 1962 · The Tonight Show Starring Johnny Carson as Self
• 1961 · The Mike Douglas Show as Self - Co-Host
• 1961 · Come September as Beagle
• 1960 · Surfside 6 as Willy
• 1958 · 77 Sunset Strip as Joey Kellogg
• 1958 · Lawman as Owny O'Reilly
• 1958 · Bronco as
• 1957 · Maverick as Billy The Kid
• 1957 · Calypso Heat Wave as
• 1956 · The Dinah Shore Chevy Show as Self
• 1956 · The Steve Allen Show as Self - rehearsing for 'Jack and the Beanstalk'
• 1956 · Telephone Time as
• 1956 · Tony Awards as Self - Nominee
• 1956 · Tony Awards as Self - Special Tony Award for Lifetime Achievement Recipient
• 1956 · Tony Awards as Self - Performer
• 1956 · Tony Awards as Self - Presenter
• 1956 · Tony Awards as Self - Winner / Performer
• 1954 · December Bride as
• 1954 · December Bride as Jimmy
• 1953 · The Oscars as Self
• 1952 · About Face as Bender
• 1950 · The Colgate Comedy Hour as Self
• 1950 · What's My Line? as Self - Panelist
• 1948 · The Ed Sullivan Show as Self
• 1944 · Golden Globe Awards as Self - Presenter
• 1944 · Golden Globe Awards as Self - Nominee
• Future · 'Twas the Night Before Christmas as