Shared credits
Sid Haig averages 5.28, Beverly Washburn averages 6.68. Apart that suggests 5.98; together they average 6.70, a lift of +0.72.
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.
| Spider Baby or, The Maddest Story Ever Told | 1967 | 6.7 | 9,024 | as Ralph | as Elizabeth |
| Pit Stop | 1969 | 6.7 | 1,281 | as Hawk Sidney | as Jolene |
