Suggestions by @delilah

Colin Farrell

as Melkor in Sauron

Score: +1

Liam Neeson

as Aulë in Sauron

Score: +1

Ewan McGregor

as Sauron in Sauron

Score: +2

Peter Jackson

as Director in Sauron

Score: +1

Ewan McGregor

as Sauron in Sauron and Morgoth: Lords of Darkness

Score: 0