Suggestions by @thurmancastings

Rachel McAdams

as Kara Zor-El in Superman (2005)

Score: +5

Sam Raimi

as Director in Superman (2005)

Score: +2

Robin Williams

as Gary in Superman (2005)

Score: +4

Blair Underwood

as Ron Troupe in Superman (2005)

Score: +4

Ernie Hudson

as Perry White in Superman (2005)

Score: +5

Louise Fletcher

as Martha Kent in Superman (2005)

Score: +4

Wilford Brimley

as Jonathan Kent in Superman (2005)

Score: +4

Constance Marie

as Cat Grant in Superman (2005)

Score: +4

Eva Mendes

as Eve Teschmacher in Superman (2005)

Score: +4

Justin Long

as Jimmy Olsen in Superman (2005)

Score: +4

Patricia Velásquez

as Angela Spice in Superman (2005)

Score: +4

Jessica Alba

as Kendra Saunders in Superman (2005)

Score: +5

Michael Cerveris

as Rex Mason in Superman (2005)

Score: +4

Bruce Campbell

as Guy Gardner in Superman (2005)

Score: +4

Lance Reddick

as Michael Holt in Superman (2005)

Score: +5

Ewan McGregor

as Lex Luthor in Superman (2005)

Score: +5

Carla Gugino

as Lois Lane in Superman (2005)

Score: +4

James Marsden

as Clark Kent / Kal-El in Superman (2005)

Score: +7