Lately in training we've been going over a lot of mount work that is based off of Roger Gracie, due to the fact that no one really seems to compare to him in this aspect of the game. If you watch the video below, you can see basically every detail of Roger's entry to mount, from shoulder pressure to leg placement. My favorite part about this move is the little trick for the shoulder pressure, it almost turns side control into a choke itself and really makes your opponent want to give up the mount as to be more comfortable. My coach, Gustavo Dantas, told me about the video I am posting, he has really been studying this guy's videos a lot. It is basically a series of this guy who breaks down Roger's game and puts it into an instructional. He does all aspect's of the world champions game, but this is my personal favorite. He has other videos too, but I would just stick to the ones that say they are Roger moves. You can check out the rest of the videos at http://www.youtube.com/user/TrumpetDanBJJ.