I did the Personal Training with Jackie dvd this morning. It's forty minutes of circuit training with weights.
Much as I love the Shred, it's fun to do this one sometimes because it's so orderly. She systematically takes you through all your major muscle groups, destroying them. Hamstrings, quads, glutes, back, chest, bi/tri/shoulders, upper abs, lower abs, obliques. And it moves so quickly that it's hard to get bored or to feel like you can't keep going, because you keep moving on to something new.