Last night I had the pleasure of going to a seminar with Roger Gracie, and if you ever get the chance to do so, I highly recommend it. He showed 5 techniques, all of which he uses in competition. A very neat variation on the armbar from closed guard, and entry into the side guard that he used to sweep Comprido, two ways to take mount from side control, and his famous cross choke. The technique was great, as expected the small details he added were game changing. And because the stuff he showed was pretty 'basic', it would fit into anyone's game right away. I literally can see myself using all of what he showed right away without changing any aspects of my meta-game. This is a great seminar for advanced players to attend, because he's not showing something fancy that you may or may not use, he's showing you how to do things you already do better. Roger was also extremely gracious in terms of taking pictures with everyone, and when some of the upper belts went out to dinner with him afterwards he was very patient and open in terms of answering questions about technique and old matches of his. He seems like a very soft spoken, quiet guy, but he navigates his (small community) celebrity gracefully. He was very generous with his time and attention, unlike some other high level black belts I've talked to who were basically mentally checked out except when they were teaching. So, cool guy, very down to earth, and showed exactly the kind of stuff you'd hope if you know his game. The details on taking mount from side control alone were worth the price of admission for me. Highly recommended, maybe the best I've been to in terms of adding to my game.