How many movies have Barry Levinson and Henny Youngman collaborated on?

They have worked on 2 movies together! Their first movie together was Silent Movie (1976) while their highest rated movie together was History of the World: Part I (1981). They have not worked together since History of the World: Part I (1981).

Role
Column Salesman - The Roman Empire
Role
Chemist - The Roman Empire
Crew
Screenplay
Role
Fly-in-Soup Man
Role
Executive