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Shared credits
Sam Hamm averages 6.75, Michael Keaton averages 6.46. Apart that suggests 6.61; together they average 7.30, a lift of +0.69.
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.
 Batman | 1989 | 7.5 | 437K | Writer | as Batman |
 Batman Returns | 1992 | 7.1 | 354K | Writer | as Batman |
