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Two travelers (Idris Elba and Kate Winslet) are trapped on a remote mountain after their plane crashes. Their story of survival reveals the complexities of the human spirit.

Pour one out for what could have been. 

Before Kate Winslet and Idris Elba signed on to star in The Mountain Between Us (in theaters Friday), a survival romance adapted from Charles Martin’s 2010 novel of the same name, Michael Fassbender, Charlie Hunnam, Rosamund Pike and Margot Robbie were all attached to play the respective central duo, according to IndieWire and Deadline.

Here are five more instances of actors who could have been in some of the biggest movies of the past few years: 

Will Poulter in ‘It’

The highest-earning horror film of all time might have floated a little differently. Before Andy Muschietti signed on to direct, True Detective director Cary Fukunaga was attached to helm the project, with Will Poulter (We’re the Millers, The Maze Runner) set to play Pennywise the Clown. But the Detroit actor dropped out of the Stephen King adaptation when Fukunaga exited for creative differences, although Muschietti had hoped to continue working with Poulter before he cast Bill Skarsgård. 

“I was very, very intrigued by the prospect of working with Will,” Muschietti told Deadline. “I always thought that he would be an amazing Pennywise. We talked a little bit about it, the idea of making the movie even though Cary wasn’t there. Will basically expressed a feeling that he had slowly disengaged from playing that character that was so dark and terrifying.”

Gal Gadot in ‘Mad Max: Fury Road’

Before she…