Suggestions by @captainwhaddock

Steve Guttenberg

as Thomas Hutter in Nosferatu (1990s Edition)

Score: +3

William Finley

as Knock in Nosferatu (1990s Edition)

Score: +3

Steven Spielberg

as Producer in Brad Bird’s The Spirit (1984)

Score: +1

Genesis

as Famous Bands, Singers and Musicians in Famouse People Who Need Biopics

Score: +2

George Carlin

as Famous Comedians in Famouse People Who Need Biopics

Score: +2

William Edward Phipps

as Reporter Carl Phillips in Ray Harryhausen's The War of the Worlds (1954)

Score: +1

Lewis Martin

as Professor Richard Pierson in Ray Harryhausen's The War of the Worlds (1954)

Score: +1

John Barry

as Composer in Brad Bird’s The Spirit (1984)

Score: +2

Michael Kamen

as Composer in Brad Bird’s The Spirit (1984)

Score: +1

Sally Potter

as Director in The Perfect Frankenstein Movie (Reissue)

Score: +1

Ben van Os

as Production Designer in The Perfect Dracula Movie

Score: +1

Ben van Os

as Production Designer in The Perfect Frankenstein Movie (Reissue)

Score: +1

Ferdinando Scarfiotti

as Visual Reference in The Who's Tommy

Score: +1

Bo Welch

as Production Designer in The Who's Tommy

Score: +1

Tom Hollander

as John Major in Thatcher

Score: +1

David Bradley

as Michael Foot in Thatcher

Score: +1

Gary Oldman

as Geoffrey Howe in Thatcher

Score: +1

Haluk Bilginer

as Count Dracula in The Perfect Dracula Movie

Score: +2

William Finley

as Morris Renfield in Ken Russell's Dracula

Score: +2

William Finley

as R. M. Renfield in The Perfect Dracula Movie

Score: +1