I bought the Advanced workout over two years ago when I bought my heavy bag, and started re-using it a few weeks ago after my boxing classes finished. It's primarily an instructional DVD, but you can use segments of it as a follow-along workout which is what I do. (I don't have the Beginners DVD.)
The Advanced DVD is very well chaptered from the main menu and covers everything from wrapping your hands, to tutorials on the punches, to shadow boxing, heavy bag workouts, pad work (with a partner), core work, skipping, a med ball workout, and stretching.
There are four rounds of shadow boxing, and four rounds of heavy bag boxing which follow the same movement pattern. The shadow boxing has good music with the right beat to follow along, and Michael cues the heavy bag rounds so that I can follow while my back is towards the TV. I repeat the rounds to make up a 20-minute boxing sweatfest.
I think these are good instructional DVDs for newbie boxers, and as I mentioned, you can use segments as follow-along workouts. The only disappointment for me was the med ball section which uses very conventional exercises; I was expecting something a bit more creative. I bought the DVD mainly for the heavy bag segments, as there aren't too many heavy bag workouts available.
When my boxing classes finished, I wondered if I should sell or trade this DVD, but found that it has a place in my collection. It's very motivational - the title segment between the chapters has very evocative music with an out-of-focus shot of two boxers beating the snot out of each other - always gets me in the right mood!