I became a flexibility junkie lately. It seems that on internet there are four names assosiated with flexibility training. First one is Tom Kurz. He has been around for about 15 years. His ads appeared in black belt for a long time. He is know for sitting in split in the middle of chairs. To prove that is he is straight and counter balance his shorts, he has a girl or a child with him. lol Second one is Pavel Tsatsauline been around for 10 years. Markets himself on "Russian Secrets" Calls everyone a comrade and makes many claims of teching special forces, whom for whatever reason need a full split in a gun fight. lol Third Matt furey. I would not give this fat ass any credit, but there is a picture that of him doing a front split. Hopefully no air brushing was used. I don't see him doing a side split anytime soon. Fourth is Paul Zaichik. He has been arounf for only 3 years or so and he is fairly young. He likes the "straight to the point" approach. Products. Kurz 1 DVD 2 Books. Still has a momentum that was build up over the last decade and a half. The videos are rather simple, and unfortunately did not work for me, when I tried it. Pavel A number of flexibility videos and books. Mainly relies on PNF and other tricking mechanism. The books are ok, but the videos show "I don't give a fuck" attitude. Furey I saw his stuff on line for free. Nothing extra ordinary as he claims. he is flexible bending backward that's about it. Zaichik 4 DVDs, one about splits. 1 book. Probably the freshest approach to flexibility I seen. He uses sequencing of stretches. Pressure points, properties of oils, etc. more info in his DVD than other DVDs. Plus he gives out a lot of free info. If anyone has any comments or has different oppinion than mine I would love to hear it.