I've tried many a work out dvd in my time and this is by far the best, for two reasons. The first is that Jillian is not annoying and nauseating like some (ahem Katie Price, Jennifer Ellison etc.) she is straight talking and to the point and makes sure you earn your weight loss!
The second is (most importantly) the 20 minute workout is intense and you can really feel it working after using it just for a few days! and the fact that its such a short workout is excellent if you have a busy schedule or, if like me, you get bored easily.
Jillian also has two accomplices in the background which is great for showing us how the moves should be done and you have the option of watching Anita who is less intense or Natalie when you're up for a challenge!
Would definitely recommend!