Suggestions by @captainwhaddock

Jaco Van Dormael

as Writer in Smile: The Life of Brain Wilson

Score: -1

Julie Taymor

as Director in Smile: The Life of Brain Wilson

Score: -1

Sean Pertwee

as Eugene Landy in Smile: The Life of Brain Wilson

Score: +1

John Goodman

as Murry Wilson in Smile: The Life of Brain Wilson

Score: +1

Josh Gad

as Carl Wilson in Smile: The Life of Brain Wilson

Score: +1

Daniel Radcliffe

as Mike Love in Smile: The Life of Brain Wilson

Score: +1

Zac Efron

as Al Jardine in Smile: The Life of Brain Wilson

Score: +1

Richard Madden

as Dennis Wilson in Smile: The Life of Brain Wilson

Score: +1

Peter Capaldi

as Keith Joseph in Thatcher

Score: +1

David Suchet

as Nigel Lawson in Thatcher

Score: +1

Soviet Union

as Disapproved By in The Worst 'Toy Story' Movie

Score: +1

Derek Savage

as Director in The Worst 'Toy Story' Movie

Score: +1

Derek Savage

as Writer in The Worst 'Toy Story' Movie

Score: +1

Adolf Hitler

as Director in The Worst 'Toy Story' Movie

Score: +1

Faye Marsay

as Nurse Mills in The Singing Detective (Remake)

Score: +1

Robin Weaver

as Nicola in The Singing Detective (Remake)

Score: +1

Janet Montgomery

as Mrs. Marlow in The Singing Detective (Remake)

Score: +1

Michael Smiley

as Dr. Gibbon in The Singing Detective (Remake)

Score: +1

Chris Noth

as Mark Binney in The Singing Detective (Remake)

Score: +1

Richard E. Grant

as Philip Marlow/The Singing Detective in The Singing Detective (Remake)

Score: +2