'Thor' at 15: Director Kenneth Branagh on casting Chris Hemsworth and making Marvel's most influential Phase One movie

Chris Hemsworth as the title character in "Thor." Marvel Studios; Alyssa Powell/BI It's been 15 years since "Thor" opened in theaters in May 2011. Director Kenneth Branagh recounted his memories of making the movie to Business Insider. Branagh also explained the more serious direction he would have taken with a "Thor" sequel. In 2008, Kenneth Branagh was at a crossroads. He'd spent years forging a reputation as a skilled adaptor of William Shakespeare's works, writing, directing, and starri...