Mr. Energy Czar is a YouTube contributor who started posting videos about 10 months ago. For the last 3-4 years he has been working to prepare his household for what he believes is an upcoming energy crisis that will be spurred by Peak Oil. Personally I agree with him in the larger sense that there will be large disruptions in our economies as demand for oil outstrips supply during this decade. Whether or not it will be as severe as he believes it will be only time will tell.
Regardless, his approach to reducing his own personal energy use and what he has learned about reducing one's environmental footprint within our current society and economy is very useful information. He has done a great job educating himself and--now with these videos--sharing his education with others.
Whether you can take on the comprehensive effort he is undertaking or just start taking some smaller steps toward improving your environmental actions, the information he provides can be very useful. You don't have to subscribe to his world view to benefit from his knowledge. And you can use it to improve your own personal circumstances and your contribution towards a cleaner environment.