As I sat down to review this DVD purchase dvds in the Lock On series, I found that I was going to have Purchase Justified 1-2 a difficult time writing this review as the basics of this DVD are exactly the same as the previous two volumes, which in and of itself is a fantastic thing. Therefore a lot of my review is going to be a partial repeat of my previous two reviews on volumes one and two in the Lock On series. So without further ado here is my review on Jersey Shore Seasons 1-4 this DVD.One of the first things that jumped out at me from the onset when I started watching Alain's "Lock On" series of DVD's was the simple yet effective approach that he took in the production and South Park Seasons 1-14 DVD presentation of this series of DVD's. My initial impression was one of being in an actual seminar environment while Alain was teaching instead of merely watching an instructional DVD. You won't find any pointless or ineffective "bells and whistles" with this series; instead what you will find is good quality instruction covering a wide array of joint locking techniques. This particular DVD focuses on shoulder locking techniques.