His, uh, hammer:
"It is a pretty impressive piece of equipment. It was quite heavy, so that helped with the stunts. If it was too light, you would swing it around like a toothpick and it wouldn’t look impressive. When there is some weight to it and you have to physically use your shoulder and back, it gives you a sense of power. I got very comfortable holding it. When I did the earthbound scenes without it, I felt naked."
One more shot from the Interview interview, AFTER THE JUMP...
Chris Hemsworth [Interview]
Previously...
Watch: Chris Hemsworth Suitably Pumped to Wield Thor's Hammer [tr]
Chris Hemsworth Breaks Out the Thor Beefcake [tr]
Chris Hemsworth's Thor Has Arms Worthy of His Hammer [tr]