6. Robert Pattinson // Twilight (2008)

Given how The Twilight Saga launched Robert Pattinson to the heights of teen heartthrob-dom, it can be easy to forget that, when he was cast, the majority of fans were not pleased. His only major movie before then had been Harry Potter and the Goblet of Fire, where he played Cedric Diggory, whose clean-cut, good boy image was a far cry from the brooding sexiness that fans wanted from vampire Edward Cullen. French actor Gaspard Ulliel was a fan favorite choice to fill the role, a fact referenced by author Stephenie Meyer in a blog post where she named future Superman Henry Cavill as her preferred actor for the part. Pattinson would later describe the fan reaction as “unanimous unhappiness” to MTV. He told the Evening Standard that he “got bags of letters from angry fans, telling me that I can’t possibly play Edward, because I’m Diggory,” and to Entertainment Weekly, he noted that "I stopped reading [blogs] after I saw the signatures saying 'Please, anyone else.'"