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Director and writer
Sam Firstenberg averages 4.79, Avi Kleinberger averages 4.58. Apart that suggests 4.69; together they average 5.25, a lift of +0.56.
Lift is the average of their films together minus the mean of their two career averages.
Dot size shows IMDb votes; lines are rolling five-film averages. Films with fewer than 1,000 votes are left out.
 American Ninja | 1985 | 5.5 | 18,892 | Director | Writer |
 American Ninja 2: The Confrontation | 1987 | 5.0 | 10,876 | Director | Writer |
