Suggestions by @devlinclements

Sid Phillips

as Elijah Wood in Roles That Actors / Actresses Were ALMOST Casted

Rex (Toy Story)

as Brad Garrett in Roles That Actors / Actresses Were ALMOST Casted

Mr. and Mrs. Potato Head

as John Mahoney in Roles That Actors / Actresses Were ALMOST Casted

FAKE

as Val Kilmer in Roles That Actors / Actresses Were ALMOST Casted

Woody (Toy Story)

as Ted Danson in Roles That Actors / Actresses Were ALMOST Casted

The Coachman

as Boris Karloff in Roles That Actors / Actresses Were ALMOST Casted

IO (Escape From Planet Earth)

as Wanda Sykes in Roles That Actors / Actresses Were ALMOST Casted

Thurman (Escape From Planet Earth)

as Neil Patrick Harris in Roles That Actors / Actresses Were ALMOST Casted

General Shanker

as Willem Dafoe in Roles That Actors / Actresses Were ALMOST Casted

Scorch Supernova

as James Marsden in Roles That Actors / Actresses Were ALMOST Casted

Alameda Slim

as Billy Bob Thornton in Roles That Actors / Actresses Were ALMOST Casted

Buck (Home on the Range)

as Mark Hamill in Roles That Actors / Actresses Were ALMOST Casted

Grace (Home on the Range)

as Alfre Woodward in Roles That Actors / Actresses Were ALMOST Casted

King Gator

as David Alan Grier in Roles That Actors / Actresses Were ALMOST Casted

Annabelle/Whippet Angel

as Helen Mirren in Roles That Actors / Actresses Were ALMOST Casted

Carface Carruthers

as Marlon Brando in Roles That Actors / Actresses Were ALMOST Casted

Noah the Elder

as Richard Griffiths in Roles That Actors / Actresses Were ALMOST Casted

Memphis (Happy Feet)

as Paul Rudd in Roles That Actors / Actresses Were ALMOST Casted

Lovelace(Happy Feet )

as Kelsey Grammer in Roles That Actors / Actresses Were ALMOST Casted

Gloria (Happy Feet)

as Mila Kunis in Roles That Actors / Actresses Were ALMOST Casted