Sam Rockwell, hot off his Oscar-winning performance in 2017?s ?Three Billboards Outside Ebbing, Missouri,? is joining Scarlett Johansson in ?Thor: Ragnarok? director Taika Waititi?s Nazi Germany satire, ? Jojo Rabbit,? a representative for Rockwell told TheWrap. TheWrap initially broke the news that ? Jojo Rabbit? would be Waititi?s next film. He will also be stepping in front of the camera to star in the film as an imaginary version of Adolf Hitler.