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.
The Tonight Show Starring Johnny Carson
Self
James Cagney: That Yankee Doodle Dandy
Self
I Captured the King of the Leprechauns
Self
Some Like It Hot
Detective Mulligan
You Must Remember This: The Warner Bros. Story
Self (archive footage)
Angels with Dirty Faces: Whaddya Hear? Whaddya Say?
Self (archive footage)
Welcome Home, Johnny Bristol
Sgt. McGll
Happy Days
