This list of actors who didn’t get the role will make you compare them with the actor that DID get the role. Usually the producers made the right decision.
#1 Julia Roberts for “The Blind Side”
Julia Roberts turned down the lead role for “The Blind Side,” opting to join the cast in the light romantic comedy, “Valentine’s Day” (insert laughter here). Sandra Bullock ended up getting the role and also bagging an Oscar.