Suggestions by @jacobking1

Martin Landau

as Bud in Kill Bill in Classic Hollywood (1960s)

Score: +1

Michael Biehn

as Dr. David "Dave" Bowman in James Cameron's 2001: A Space Odyssey

Score: +1

Veronica Lake

as Ellie Driver in Kill Bill in Classic Hollywood (1960s)

Score: +4

Toshirō Mifune

as Hattori Hanzō in Kill Bill in Classic Hollywood (1960s)

Score: +1

Nancy Kwan

as O-Ren Ishii in Kill Bill in Classic Hollywood (1960s)

Score: +1

John Carradine

as Bill in Kill Bill in Classic Hollywood (1960s)

Score: +1

Alfred Hitchcock

as Director in Kill Bill in Classic Hollywood (1960s)

Score: +1

Tippi Hedren

as Beatrix 'The Bride' Kiddo in Kill Bill in Classic Hollywood (1960s)

Score: +1

Lloyd Bridges

as 'Windows' in The Thing in Classic Hollywood (50s)

Score: +1

Richard Kiel

as Chewbacca in Star Wars Prequel Trilogy (1960s)

Score: 0

Sidney Poitier

as Mace Windu in Star Wars Prequel Trilogy (1960s)

Score: -1

Rex Harrison

as Qui-Gon Jinn in Star Wars Prequel Trilogy (1960s)

Score: -1

Kenneth Williams

as C3PO in Star Wars Prequel Trilogy (1960s)

Score: 0

Boris Karloff

as Count Dooku in Star Wars Prequel Trilogy (1960s)

Score: +3

Dana Wynter

as Padme Amidala in Star Wars Prequel Trilogy (1960s)

Score: -2

Alec Guinness

as Obi-wan Kenobi in Star Wars Prequel Trilogy (1960s)

Score: +6

Jack Warden

as Vance Norris in The Thing in Classic Hollywood (50s)

Score: +1

John McIntire

as Dr. Copper in The Thing in Classic Hollywood (50s)

Score: +1

Thomas Mitchell

as Dr. Blair in The Thing in Classic Hollywood (50s)

Score: +2