Liam Neeson - Liam Neeson's Pee Froze Shooting The Grey In Subzero Temperatures

The A-Team star signed on for the winter wilderness drama thinking some of the scenes would be completed using computer-generated imagery, but he admits he was in for quite a surprise when the cast and crew jetted to British Columbia for the project.

He says, "We were up in a place called Smithers, some little village, but its about 200 miles northeast of Vancouver. The first week it was minus 40 degrees (Fahrenheit)... If you went out for a pee-pee, that was interesting (because it froze)... There's no Cgi, all that weather stuff, it's all the real deal.

"The snow would be (waist) deep and you'd have to walk from here to the camera and it became like a two-hour work-out. It really did. It was unbelievable. It was one of the toughest (shoots) I've ever done.

"The other one was Star Wars. We were on location in Tunisia. And it was 120 degrees (Fahrenheit) and we used to do competitions at lunch time, (we'd take) raw eggs and and crack them open on rocks and we'd lay bets to see how fast they cooked. In the end it was about six or seven seconds."