Suggestions by @mike1seravello

John Rambo

as Chuck Norris in Roles That Actors / Actresses Were ALMOST Casted

Philadelphia (film)

as Christopher Reeve in Roles That Actors / Actresses Were ALMOST Casted

Fatal Attraction (1987)

as Christopher Reeve in Roles That Actors / Actresses Were ALMOST Casted

Kyle Reese

as Christopher Reeve in Roles That Actors / Actresses Were ALMOST Casted

Ben Richards (The Running Man)

as Christopher Reeve in Roles That Actors / Actresses Were ALMOST Casted

King Arthur (quest for camelot)

as Christopher Reeve in Roles That Actors / Actresses Were ALMOST Casted

Professor Archimedes Q. Porter

as Christopher Lloyd in Roles That Actors / Actresses Were ALMOST Casted

Ebenezer Scrooge

as Christopher Lloyd in Roles That Actors / Actresses Were ALMOST Casted

Basic Instinct (Movie)

as Christopher Lloyd in Roles That Actors / Actresses Were ALMOST Casted

Ego the Living Planet

as Christopher Plummer in Roles That Actors / Actresses Were ALMOST Casted

Pitch Black

as Christopher Lee in Roles That Actors / Actresses Were ALMOST Casted

Airplane!

as Christopher Lee in Roles That Actors / Actresses Were ALMOST Casted

Captain Nemo (20'000 League's Under The Sea)

as Chris Hemsworth in Roles That Actors / Actresses Were ALMOST Casted

Conan the Barbarian (2011)

as Chris Hemsworth in Roles That Actors / Actresses Were ALMOST Casted

Daddy's Home Two

as Chevy Chase in Roles That Actors / Actresses Were ALMOST Casted

Airplane!

as Chevy Chase in Roles That Actors / Actresses Were ALMOST Casted

The Santa Clause

as Chevy Chase in Roles That Actors / Actresses Were ALMOST Casted

The Prince of Egypt

as Cheech Marin in Roles That Actors / Actresses Were ALMOST Casted

The Omen

as Charlton Heston in Roles That Actors / Actresses Were ALMOST Casted

Scary Movie 2 (2001)

as Charlton Heston in Roles That Actors / Actresses Were ALMOST Casted