Co-stars
Michael J. Fox averages 6.52, Christopher Lloyd averages 5.65. Apart that suggests 6.09; together they average 7.93, a lift of +1.85.
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.
 Back to the Future | 1985 | 8.5 | 1.48M | as Marty McFly | as Dr. Emmett Brown |
 Back to the Future Part II | 1989 | 7.8 | 631K | as Marty McFly | as Doctor Emmett Brown |
 Back to the Future Part III | 1990 | 7.5 | 527K | as Marty McFly | as Doctor Emmett Brown |
