Fantastic! True to the Ashtanga form, my first primary series had me covered in sweat within five minutes and I felt suitably exhausted after. I must say, there's a lot of Chaturanga Dandasana in there. I was really feeling it in my arms and shoulders near the end of the practice.
The BBB DVD wanders out of form for some handstands - perfect for me, since I would have wanted to practise a few handstands daily anyways, to keep up with my Anusara practice.