Taika Waititi , who co-wrote and co-directed the vampire spoof What We Do In the Shadows , is in negotiations to direct the third installment of Marvel’s Thor movies, titled Thor: Ragnarok . Chris Hemsworth is reprising his role of the Norse god of thunder. Waititi’s emergence as the choice caps off a round of intense meetings that took place over the last month. Ruben Fleischer, Rob Letterman and Rawson Marshall Thurber were the other directors that were finalists for the gig. Waititi is the latest head-scratcher from Marvel for their pick to direct a big-budget extravaganza, especially one steeped in the Norse mythology and an Apocalypse myth. He wrote and directed episodes of Flight of the Conchords and is a writer on Disney’s upcoming animated feature Moana, which will star Dwayne Johnson. (Fun fact: he appeared with Ryan Reynolds in Green Lantern, the 2011 adventure movie from Marvel’s superhero movie rival, Warner Bros.) Guardians of the Galaxy director James G...