I've watched them all and they're excellent fun. Although if you were in a survival situation you probably wouldn't act and do the things he does (unless you want to increase the chances of being killed by 100x :p). His methods are unsuprising though with his background in the Army and training in the French Foreign Legion - the series would be pretty boring if he wasn't completely mad though
The series was called Man Vs Wild in the US, it finished airing earlier this year I think - so far it's been exactly the same series except for one episode which the US didn't get.