The following clip is from a BBC documentary on martial arts. This segment features Guro Dan Inosanto teaching at the original Inosanto Academy of Martial Arts in Marina Del Rey, CA. I have a lot of fond memories of being in awe of the place and the people I was training with there. I also collected a lot of bruises, at least one scar, and I'm sure I left a lot of brain cells there as well.
BTW - look for Jeff Imada and Cass Magda doing trapping to grappling techniques during the training sequences.