Suggestions by @maxlindstedt

Michael Caine

as Jacob Marley in A Christmas Carol

Score: +1

Ian McShane

as Ebenezer Scrooge in A Christmas Carol

Score: +3

Peter Capaldi

as Merlin in The sword in the stone remake

Score: -1

Judi Dench

as Nurse in Murder by Death

Score: +1

Catherine Tate

as Jessica Marbles in Murder by Death

Score: 0

Emily Blunt

as Dora Charleston in Murder by Death

Score: +1

David Tennant

as Dick Charleston in Murder by Death

Score: +1

Eddie Izzard

as Lionel Twain in Murder by Death

Score: +3

Anthony Hopkins

as Bensonmum in Murder by Death

Score: +1

Graham Norton

as Lionel Twain in Murder by Death

Score: -1

Brandon Soo Hoo

as Willie Wang in Murder by Death

Score: +1

Jackie Chan

as Sydney Wang in Murder by Death

Score: +1

Neil Simon

as Writer in Murder by Death

Score: +1

Jason Momoa

as Guts in Berserk Live Action

Score: -7

Tom Hardy

as Paulie Pennino in Rocky Remake

Score: +1

David Harbour

as Paulie Pennino in Rocky Remake

Score: +2

Eddie Redmayne

as Arthur Dent in Hitchhikers Guide to the Galaxy Musical

Score: +1

Hugh Jackman

as Slartibartfast in Hitchhikers Guide to the Galaxy Musical

Score: +1

Taron Egerton

as Ford Prefect in Hitchhikers Guide to the Galaxy Musical

Score: +1

Alan Menken

as Composer in Hitchhikers Guide to the Galaxy Musical

Score: +1