Ian McKellen and John Bach made 2 films together, averaging 8.90, 2.21 above their career marks. The best is The Lord of the Rings: The Return of the King at 9.0.

Ian McKellen averages 6.59, John Bach averages 6.80. Apart that suggests 6.70; together they average 8.90, a lift of +2.21.

Lift is the average of their films together minus the mean of their two career averages.