Kirks Dad is Thor May 18, 2009 Star Trek’s Chris Hemsworth rumoured as Thor Chris Hemsworth, currently playing James T. Kirk’s dad George in the new Star Trek movie, has reportedly won the title role in Marvel’s Thor. According to Deadline Hollywood Daily, the Aussie actor had initially “read for the part of Thor but wasn’t given a test because a casting director had nixed him early on. Then, after a conversation with Hemsworth’s manager, Kevin Feige decided to let Chris read again. And once Marvel put him on tape, it was ‘Oh my god’. [Thor director Kenneth] Branagh came to town last week and saw the Chris test and made the final casting decision today.” The 25 years-old will next be seen in the Joss Whedon-scripted horror flick Cabin in the Woods.