(1969) Butch Cassidy and the Sundance Kid

as Woodcock

(1964) The New Interns

as Dr. Phil Osterman

(1975) Shampoo

as Mr. Pettis

(1968) The Boston Strangler

as Lyonel Brumley

(1982) MegaForce

as Professor Eggstrum

(1975) For the Use of the Hall

as Martin

(1978) Hooper

as Bidwell

(1998) Bulworth

as Older Man

(1976) Norman... Is That You?

as Mr. Sukara

(1965) A Rage to Live

as Paul Rutherford

(1968) What's So Bad About Feeling Good?

as Murgatroyd

(1968) How to Save a Marriage and Ruin Your Life

as Roger

(1973) The Third Girl from the Left

as Zimmy

(1975) Let's Switch!

as Sidney King

(1968) Nobody's Perfect

as Hamner

(1977) Oh, God!

as Briggs

(1988) Joan Rivers and Friends Salute Heidi Abromowitz

as George Furth

(1977) Airport '77

as Gerald Lucas

(1970) Tales of Washington Irving

as Ichabod Crane (voice)

(1974) Blazing Saddles

as Van Johnson

(1968) P.J.

as Sonny Silene

(1966) Fame Is the Name of the Game

as Morgue Attendant

(1965) A Very Special Favor

as Pete

(1970) Myra Breckinridge

as Charlie Flager Jr.

(1980) The Scarlett O'Hara War

as George Cukor

(1982) Young Doctors in Love

as The Patients - Disgusting Looking Patient

(1967) Tammy and the Millionaire

as Dwayne Whitt

(1967) The Cool Ones

as Howie

(1977) Charlie Cobb: Nice Night for a Hanging

as Conroy

(1983) The Man with Two Brains

as Timon

(1981) The Cannonball Run

as A.F. Foyt

(1983) Doctor Detroit

as Arthur Skridlow

(1970) Original Cast Album: Company

as Self

(1999) Goodbye Lover

as Mr. Merritt

(1971) Who Killed the Mysterious Mr. Foster?

as Fletcher

(2016) Best Worst Thing That Ever Could Have Happened...

as Self (archive footage)

(1964) The Best Man

as Tom

(1967) Games

as Terry

(1973) What Are Best Friends For?

as Barry Chambers

(1984) Murder, She Wrote

as Farley Pressman

(1965) Green Acres

as ---

(1965) F Troop

as ---

(1986) L.A. Law

as Archie Briggs

(1974) Little House on the Prairie

as ---

(1970) The Odd Couple

as Harvey

(1968) The Good Guys

as ---

(1965) I Dream of Jeannie

as Farnum

(1966) Batman

as Gallus

(1971) All in the Family

as Whitney Fitzroy IV

(1966) That Girl

as ---

(1990) Wings

as Frank

(1974) Happy Days

as Mr. Pinney

(1963) Arrest and Trial

as ---

(1993) Dr. Quinn, Medicine Woman

as ---

(1991) Sisters

as ---

(1965) Laredo

as ---

(1966) The Monkees

as ---

(1962) Going My Way

as ---

(1966) Felony Squad

as ---

(1965) Run for Your Life

as Osborne Parquette III

(1965) Tammy

as ---

(1969) The Debbie Reynolds Show

as ---

(1964) Profiles in Courage

as Stanley

(1970) Night Gallery

as Gillings (segment "The Little Black Bag")

(1975) Ellery Queen

as ---

(1965) Honey West

as Sandy Corbin

(2001) The Broad Side

as ---

(1976) The Dumplings

as Frederic Steele

(1968) Adam-12

as Tyler Finch

(1965) Run for Your Life

as Arthur Neely

(1956) Tony Awards

as Self - Nominee

(1987) CBS Summer Playhouse

as Rip

(1970) The Odd Couple

as Belkin

(1969) Love, American Style

as Phil

(1984) Murder, She Wrote

as Fred Owens

(1984) Murder, She Wrote

as Jerry Bozell

(1962) The Alfred Hitchcock Hour

as Charlie

(1962) The Alfred Hitchcock Hour

as Jack Terola

(1969) Love, American Style

as George