Britney Spears and Michael Jackson made 3 films together, and the 2 rated ones average 6.77, 0.89 above their career marks. The best is Religulous at 7.0.

Britney Spears averages 5.20, Michael Jackson averages 6.56. Apart that suggests 5.88; together they average 6.77, a lift of +0.89.

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