What's great about this video demo is that it's done in a gi scenario, which has unique elements to it (namely grips that don't apply in no-gi or collegiate wrestling). Further, I really like the way Christian separates the steps, giving you a method to drill and perfect the technique (more detail is always better).
Christian is a BJJ coach and competitor and has been a staple in BJJ blogosphere (I can't believe I used that term) for many years now. This is one of many (and the most recent) of his contributions to the BJJ community (via video demos, articles, etc.).