Yoga for Big Guys - I like this one because I'm as flexible as concrete, but partly due to being bigger in places that the norms aren't.
Yoga for BJJ is good too and Stephan Kesting has some good video as well. There's enough free stuff on Youtube that I wouldn't buy the full program. I particularly like the stuff on breathing which is crucial in BJJ - especially if you do a lot of inverted/tornado guard (I find it hard to breathe in this position - not that I'm in it a lot).
Yoga for BJJ is good too and Stephan Kesting has some good video as well. There's enough free stuff on Youtube that I wouldn't buy the full program. I particularly like the stuff on breathing which is crucial in BJJ - especially if you do a lot of inverted/tornado guard (I find it hard to breathe in this position - not that I'm in it a lot).