Bert Lahr

Bert Lahr (born Irving Lahrheim; August 13, 1895 – December 4, 1967) was an American actor and comedian. Lahr is remembered today for his roles as the Cowardly Lion and the farmworker Zeke in the 1939 movie The Wizard of Oz, but was also well-known for work in burlesque, vaudeville, and on Broadway. Description above from the Wikipedia article Bert Lahr, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Cast

The Wizard of Oz
"Zeke" / Cowardly Lion

The Sound of Laughter
Egbert Bunting / Roland Montague

The Night They Raided Minsky's
Professor Spats

Just Around the Corner
Gus

Ship Ahoy
Skip Owens

Mr. Broadway
Bert Lahr

Meet the People
Commander

Always Leave Them Laughing
Eddie Eagen

Flying High
Emil 'Rusty' Krouse

Sing Your Worries Away
Clarence 'Chow' Brewster

Henry the Ache
King Henry VIII

Rose Marie
Barney McCorkle

A Tale of Old Whiff
voice

Merry Go Round of 1938
Bert

Zaza
Cascart

The Second Greatest Sex
Job McClure

Josette
Barney Barnaby

Love and Hisses
Sugar Boles

That's Entertainment!
(archive footage)
Whose Baby Are You?
Bert Halibut

The Fantasticks
Ben Hucklebee

Mister Universe
Joe Pulaski

The Dark Side of the Rainbow
'Zeke' (archive footage)

Faint Heart
Rudolf

The Great Waltz
Hans Ebesteder

Hizzoner
Bert Lahr, Cop

No More West
Gunpowder Bert

Shemp Cocktail: A Toast to the Original Stooge
Self (archive footage)
To Oz! The Making of a Classic
Self

The Big Parade of Comedy
The Commander (archive footage)

Anything Goes
Moonface

The Wonderful Wizard of Oz: The Making of a Movie Classic
Self (archive footage)

Hollywood Singing and Dancing: A Musical History - The 1930s: Dancing Away the Great Depression
Self (archive footage)
Boy, Oh Boy
The Butler

Hidden Hollywood: Treasures from the 20th Century Fox Film Vaults
Self (Archival Footage)
Oz
Self / Cowardly Lion (archive footage)