Suggestions by @dungeers

Chris Farley

as Blaine Cody in Rat Race (1991)

Score: +1

John Goodman

as Captain Hollister in Red Dwarf

Score: +2

Charlize Theron

as Kristine Kochanski in Red Dwarf

Score: +2

Crispin Glover

as Holly in Red Dwarf

Score: +1

Doug Jones

as Kryten in Red Dwarf

Score: +3

Donald Glover

as Cat in Red Dwarf

Score: +4

Bill Hader

as Arnold Rimmer in Red Dwarf

Score: +5

Seth Rogen

as Dave Lister in Red Dwarf

Score: -1