It would have changed the course of many movies and some television shows thereafter. Harrison Ford has become a movie icon, while Magnum P.I. opened up the crime genre for the 80s with several owing their success to CBS’s high ratings. It’s impossible to imagine anyone other than Ford as Indiana Jones.
During an intensive casting process, Lucas and Spielberg auditioned many actors, and finally cast then little-known actor Tom Selleck as Indiana Jones. Shortly afterward pre-production began in earnest on Raiders of the Lost Ark.However, CBS refused to release Selleck from his contractual commitment to Magnum, P.I. (which was gradually gaining momentum in the ratings), forcing him to turn down the role.One of CBS’s concerns was that shooting for Magnum P.I. conflicted with shooting for Raiders, both of which were to begin about the same time. However, Selleck was to say later in an interview that shooting for Magnum P.I. was delayed and did not actually begin until shooting for Raiders had concluded.