
Acting
Pat O'Brien (born William Joseph Patrick O'Brien) was an American stage, screen, radio, and television actor. He was a star during the first several years of his film career, the height of his popularity being during the 1930s and 1940s.

Classic Movie Bloopers: Uncensored
as Self (archive footage)

You Must Remember This: The Warner Bros. Story
as Self (archive footage)

Angels with Dirty Faces: Whaddya Hear? Whaddya Say?
as Self (archive footage)

Dill Scallion
as Self

Hollywood Out-takes and Rare Footage
as Self (archive footage) (uncredited)

Ragtime
as Delmas
James Cagney: That Yankee Doodle Dandy
as Self

Scout's Honor
as Mr. Caboose

The End
as Ben Lawson

Billy Jack Goes to Washington
as President of the Senate

WKRP in Cincinnati
1 ep.

Happy Days
2 ep.

Banyon
1 ep.

Alias Smith and Jones
1 ep.

McCloud
1 ep.

Branded
1 ep.
Bob Hope Presents the Chrysler Theatre
1 ep.

Kraft Suspense Theatre
as Inspector Dan Zarilla · 1 ep.

The Tonight Show Starring Johnny Carson
as Self · 2 ep.

The Virginian
as Doc Bigelow · 1 ep.
The Front Page
1931