(1967) The Spirit Is Willing

as Steve Powell

(1965) A Thousand Clowns

as Nick

(1956) The Girl Can't Help It

as Barry the Paperboy

(1991) Teenage Mutant Ninja Turtles: Attack of the Big MACC

as Donatello / Bebop (voice)

(1992) Teenage Mutant Ninja Turtles: The Turtles' Awesome Easter

as Donatello / Bebop (voice)

(1986) Body Slam

as Sheldon Brockmeister

(1991) Teenage Mutant Ninja Turtles: Planet of the Turtleoids

as Donatello / Bebop (voice)

(1988) Teenage Mutant Ninja Turtles: Heroes in a Halfshell

as Donatello / Bebop (voice)

(1988) Teenage Mutant Ninja Turtles: The Epic Begins

as Donatello / Bebop (voice)

(1969) Out of It

as Paul

(2016) The Last Laugh

as Self

(1981) Warp Speed

as David Ingalls

(1985) Stark

as Lee Vogel

(1981) Time Warp

as M.U.D. (voice)

(1991) Teenage Mutant Ninja Turtles: Turtles at the Earth's Core

as Donatello (voice)

(1986) The Adventures of the American Rabbit

as Rob / American Rabbit (voice)

(1981) The Perfect Woman

as Emo

(1979) Love at First Bite

as Flashlight Vendor

(1999) The Green Desert

as Alex

(1982) Christmas Comes to Pac-land

as Inky

(1991) The Object of Beauty

as Auctioneer

(1992) Beauty and the Beast

as (voice)

(1962) Pressure Point

as Patient (as a boy)

(1962) Hands of a Stranger

as Skeet

(1986) Stark: Mirror Image

as Lee Vogel

(1984) Gallavants

as Edil / Bok / Gauk (voice)

(1992) Teenage Mutant Ninja Turtles: The Mystery of the Cliffs

as Donatello (voice)

(1986) L.A. Law

as Seth Shumay

(1987) Teenage Mutant Ninja Turtles

as Donatello (voice)

(1995) Caroline in the City

as Rabbi Katz

(1967) Mannix

as ---

(1988) Empty Nest

as ---

(2000) Randall & Hopkirk (Deceased)

as ---

(1976) Jabberjaw

as Clamhead

(1977) Three's Company

as Gilbert Larwin

(1963) Arrest and Trial

as ---

(1984) Snorks

as Junior Wetworth/ Governor Wetworth

(1979) Archie Bunker's Place

as ---

(1953) General Electric Theater

as Etienne

(1998) The Hughleys

as ---

(1974) Kolchak: The Night Stalker

as ---

(1957) Leave It to Beaver

as ---

(1955) Alfred Hitchcock Presents

as Ignace 'Iggy' Kovacs

(1959) Philip Marlowe

as ---

(1977) Fish

as Charlie Harrison

(1981) The Kid Super Power Hour with Shazam!

as Captain Marvel Jr. / Freddy Freeman (voice)

(1960) Thriller

as 'Slip-Slip'

(1982) Pac-Man

as Inky (voice)

(1957) Richard Diamond, Private Detective

as Tommy

(1991) Space Cats

as ---

(1984) Mighty Orbots

as Rob Simmons (Voice)

(1990) Gravedale High

as ---

(1986) Throb

as ---

(1976) Good Heavens

as ---

(1972) The Don Rickles Show

as ---

(1961) Dr. Kildare

as Billy Hoffman

(1959) The DuPont Show with June Allyson

as Pepe

(1990) A Family for Joe

as ---

(1975) The Bob Crane Show

as ---

(1976) The Practice

as ---

(1992) Batman: The Animated Series

as Sheldrake (voice)

(1980) Good Time Harry

as ---

(1997) Over the Top

as ---

(1995) Star Trek: Voyager

as Arden Broht

(2006) Brothers and Sisters

as Rabbi

(2000) Curb Your Enthusiasm

as Rabbi

(1994) ER

as Baxter

(1991) Darkwing Duck

as Dr. Fossil (voice)

(1955) Alfred Hitchcock Presents

as Aaron Gold

(1962) The Jetsons

as Sneak (voice)

(1962) The Jetsons

as Mechanic (voice)

(1962) The Jetsons

as Tiny Terror / Betting Machine (voice)

(1993) Star Trek: Deep Space Nine

as Nava

(2012) Teenage Mutant Ninja Turtles

as '87 Donatello (voice)

(1993) SWAT Kats: The Radical Squadron

as Razor (voice)

(1977) The Incredible Hulk

as Harold Milburn

(1975) Barney Miller

as David Fingler

(1975) Barney Miller

as Stanley Fine

(1991) Civil Wars

as Mel Wittnauer

(1990) Tom & Jerry Kids Show

as McLochjaw (voice)

(1969) Love, American Style

as Bill