Marvel has been keeping the details of the Kenneth Branagh comic book movie Thor closely to their chest, and while it’s been filming for a couple of months now, the only thing we’ve officially seen is a single teaser image of Chris Hemsworth as the norse god. However Marvel has now let the Entertainment Tonight cameras onto the set to capture some behind-the-scenes footage, as well as to interview Hemsworth, Natalie Portman and Kenneth Branagh, and give us out first glimpse at the likes of Anthony Hopkins in costume as Odin. Click below to check it out. Thor hits UK cinemas on May 20th, 2011.