This episode was a real treat.  It was one of the most enlightening and lucid conversations about physical training I've ever had.  Show notes and links from this episode can be found here.
Pavel Tsatsouline is Chairman of StrongFirst, Inc. and was born in Minsk, USSR, which is now part of Belarus. 
In the 1980s, he was a physical-training instructor for Spetnaz, the elite Soviet special-forces units. Pavel is now a subject matter expert to the US Marine Corps, the US Secret Service, and the US Navy SEALs, and he is widely credited with introduced the now ubiquitous kettlebell to the United States. 
Over the last several years, Pavel has become a friend, and his input was critical to the success (and experiments) of The 4-Hour Body.
Whether you've heard of him or not, prepare to have your mind blown, and I don't say that lightly :)
All episodes and show notes can be found at www.fourhourworkweek.com/podcast