My body is stiff and i want to get flexibity fast so i can do martial arts..so i was thinking about getting Beyond Splits Vol. 1 by marco,, is this a good video to get??

Yes, it is excellent. All his instructional videos are top of the cream, not to mention his pricing is awesome! That is probably because he doesn't care much about pretty packaging (he films the stuff at his home, yard or dojo with a single cam, doesn't put any fancy package on the cassette, and so on). The info he gives is top knotch.

Can't speak for the video. If you want a book, Stretching Scientifically has help dozens of people I have personally talked to (and am one of).

 

http://www.stadion.com/stretch.html

Some of Marco Lala's videos are featured in the review section of http://home.att.net/~erik.mann/

 

But I haven't seen the stretching vids reviewed there. I just gave the link so you could see what is usually said about his instructional videos.