This is the only instructional Belly Dance DVD that I own (as opposed renting) so I'm not sure how helpful my opinion will be overall. But from my perspective as a beginner to formal belly dance training, this DVD is an excellent supplement to my weekly classes.
What I like best about this DVD is that it really is like having a no-frills, personalized lesson with Jenna. My studio is much focused on clean execution of movements and proper body arrangement when you're a beginner and that seems to be Jenna's focus as well. As someone who is new to BD, but not new to the world of dance, I find that's the best thing to build a dance-foundation on. She points out common mistakes where beginners can go wrong, which is super-helpful. She also breaks things down very well so that you can understand exactly how your body is supposed to be moving, as well as performing the movements at different angels so you can get maximum benefit.
The DVD is also sectioned off well, which is great when you want to work on one small section. She also has a good amount of detail for each movement, which is nice. I never felt rushed or confused at to what I was supposed to be doing.
I saw some other review where people complained about lack of performance. I thought that was odd since this is an instructional DVD. If you want to see performance material, then I highly recommend "Bellydance Superstars", "Shake it Up: Exotic Bellydance Performances", or Salimpour's "Scheherazade". If you want to have a good foundation for belly dance, pick up this DVD.