Suggestions by @noggin8

Mara Wilson

as Lily in The Walsh Claus

Score: +1

Alec Baldwin

as Lawrence the Conductor in The Walsh Claus

Score: +1

Alec Baldwin

as Engineer in Thomas' Halloween Party

Score: +1

Britt Allcroft

as Britt in Thomas' Halloween Party

Score: +1

Alec Baldwin

as Santa Claus in Santa's Volunteers

Score: +1

Anthony Field

as Anthony in Yo Gabba Gabba Friendship

Score: +4

Jeff Fatt

as Jeff in Yo Gabba Gabba Friendship

Score: +2

Murray Cook

as Murray in Yo Gabba Gabba Friendship

Score: +1

Greg Page

as Greg in Yo Gabba Gabba Friendship

Score: +3

Britt Allcroft

as Director in 100th Year Celebration of Thomas The Tank Engine

Score: +4

Mara Wilson

as Emily in 100th Year Celebration of Thomas The Tank Engine

Score: -4

George Carlin

as Ghost Dan in Come back to life

Score: +1

Peter Fonda

as Vampire Burnett in Come back to life

Score: +1

Mara Wilson

as Emily in The Adventures of Thomas and the Magic Railraod

Score: +3

Patrick Walsh

as Patrick in Yo Gabba Gabba Friendship

Score: +1

Alec Baldwin

as Alec in Yo Gabba Gabba Friendship

Score: +2

Jack Black

as Jack in Yo Gabba Gabba Friendship

Score: +2

Patrick Walsh

as Pete the Grim Reaper in Come back to life

Score: +1

Patrick Walsh

as Thomas's Driver in Thomas and Friends: The Mystery of the Golden Solar Birch

Score: +1