Sorry to put in my pennorth, but having seen active service, in several theatres and worked many times with various arms of the special forces, although me not being that "hard"
I'd like to point out that the rigours of their training, weather TA or Regular are so far detatched from "normality" it beggers beleif.
Ray Mears has inspired me in so much of my life, as far as Bushcraft goes. His method of teaching being 100% in tune with the natural world around him, especially here in the UK.
Bear Grills is a sensationalist for his TV, but from my own experience can confirm that a lot of it is used to teach special forces in their own survival techniques. For example, his time in Iceland where he tries to traverse the small deep fjorde, full of arctic melt water. He tells you that if you do go in, your body will immediately start to shut down from the shock of the sheer cold, therefore it best to scan the horizon of hot water steam vents to return your core temt to normal. Whats wrong in that. Damn good advie imho. Majority of his filming points out pure survival techniques NOT bushcraft skills. The time in Florida when he explains how to get out of a mud bog. Such simple things mean you'll live on in such crappy condidtions.
Eating some of the crap he does, IS sensational TV, but can save your life if you find yourself in similar circumstance.
BOTH give fantastic tips for either survival or bushcraft living. BOTH have a valid point.