How many movies have Jack L. Warner and Lou Marcelle collaborated on?

They have worked on 5 movies together! Their first movie together was Casablanca (1943) and was their highest rated movie together. They have not worked together since Never Say Goodbye (1946).

Never Say Goodbye (1946)

Crew
Executive Producer
Role
Radio Announcer (uncredited)
Crew
Presenter

Northern Pursuit (1943)

Crew
Executive Producer
Role
Opening Off-Screen Narrator (voice) (uncredited)
Crew
Presenter

Thank Your Lucky Stars (1943)

Crew
Executive Producer
Role
Commentator (uncredited)

Background to Danger (1943)

Crew
Executive Producer
Role
Commentator

Casablanca (1943)

Crew
Executive Producer
Role
Narrator (voice) (uncredited)