How many movies have Jack Nicholson and Roger Corman collaborated on?

They have worked on 9 movies together! Their first movie together was The Cry Baby Killer (1958) while their highest rated movie together was The Shooting (1966). They have not worked together since Velocity (1999).

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Johnny Varron (young) (archive footage)
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Producer
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Director
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Producer
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Gino, Hit Man (uncredited)
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Wes
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Executive Producer
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Billy Spear
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Lt. Andre Duvalier
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Rexford Bedlo
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Wilbur Force
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Jimmy Wallace
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Joe - TV Truck Man (uncredited)