I recently posted a technique by Mestre Roberto Leitão--a legend of luta livre. As a professor of engineering, Leitão is a very cerebral grappler. Unfortunately, most of the videos online are in either Portuguese or French. Fortunately, you don't need to know the language to the learn the techniques! But before you check out any more of his videos, you should check out this overview of Leitão's "ten principles of grappling." They are nice and simple reminders we should think about while learning, training, and rolling. That said, here is an hour-long video of some no-gi techniques by Leitão and his students (if you can get past the old school--that is, horrible!--music). So, watch, learn, and go train!