Served in the US military

Taught acting on college level

Made stage debut as Thomas Jefferson in "The Common Glory" in Williamsburg, VA

Film debut in "The Coach"

Off-Broadway debut, "The Increased Difficulty of Concentration"

Played opposite Rosalind Russell in the feature "Mrs. Polifax-Spy"

Made TV-movie debut, "Ransom for a Dead Man" (NBC)

Originated the role of Howard Cunningham on "Love and the Happy Days" episode of "Love, American Style" (ABC)

First played Martin Morgenstern, father of Valerie Harper's Rhoda on an episode of "The Mary Tyler Moore Show"

Played Martin Morgenstern on the sitcom "Rhoda" (CBS)

Co-starred with Stefanie Powers in "The Feather and Father Gang" (ABC)

Returned to "Rhoda"

Played Louis B. Mayer in "Moviola" (NBC)

Co-starred in the Broadway production of Neil Simon's "Fools"

Returned to series TV with "Park Place" (CBS)

Starred as skirt-chaser on "Foot in the Door" (CBS)

Co-starred as the grandfather on "Spencer" (NBC)

Was love interest of Katharine Hepburn in the CBS TV-movie, "Mrs. Delafield Wants to Marry"

Starred in short-lived NBC sitcom "Singer & Sons"

Starred in "Yiddish" installment of "The Sunset Gang" (PBS)

Had featured role in TV-movie "Far Hope" (ABC), directed by Bob Saget

Cast in the Robin Williams comedy "Patch Adams"

Played Grandpa Spencer Little in the award winning feature "Stuart Little"

Co-starred in the family feature "Freaky Friday"