Peter Riegert (born April 11, 1947) is an American actor, screenwriter, and film director, best known for his roles as Boon from Animal House, the fast talking ganster Aldo in Oscar, the tough Lt. Kellaway in The Mask, and crooked New Jersey State Assemblyman Ronald Zellman on the HBO original series The Sopranos.
Riegert was born in The Bronx, the son of Lucille, a piano teacher, and Milton Riegert, a food wholesaler. Riegert grew up in Hartsdale, New York, and was raised in a nonobservant Jewish household. He graduated from Ardsley High School in 1964 and later from the University at Buffalo. He worked at a number of jobs, including teaching, waiting tables, and social worker before settling on acting as a career.
He made his Broadway debut in the musical Dance with Me. Other Broadway credits include The Old Neighborhood, An American Daughter, The Nerd, and Censored Scenes From King Kong. Off-Broadway he has appeared in Road to Nirvana, The Birthday Party, Isn't It Romantic, Sexual Perversity in Chicago, and A Rosen by Any Other Name.