James Doohan and Walter Koenig made 8 films together, averaging 6.66, 0.31 above their career marks. The best is Star Trek II: The Wrath of Khan at 7.5.

James Doohan averages 6.36, Walter Koenig averages 6.34. Apart that suggests 6.35; together they average 6.66, a lift of +0.31.

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