I have all of his episodes DVR'd, so I thought I'd check it out. I just watched some of the Siberian episode.
Honestly, I just can't get into the show anymore. I know it needs to be entertaining, but I get the impression that it's little more than Discovery's version of Jackass. Why does he need to actually show himself drinking the blood of a slaughtered yak? Why does he need to show us how he eats the raw liver?
If I want interesting cuisine, I'll watch Bizarre Foods. If I want survival, I watch Survivor Man (though it doesn't seem to have any new episodes).