Yoga for Pregnancy

Ok, I'm starting my 2nd Trimester next week, and need to find a really great prenatal yoga dvd. So far I haven't been too impressed with the selection out there. Most of them are a very light workout, and do not have the energy that I am looking for. My favorite all time yoga workout is by Bob Harper of The Biggest Loser. His dvd, Yoga for the Warrior is amazing, but there are several twisting moves that I'm pretty sure are not good to do past the 1st trimester. I need to do a little more research on safe yoga moves, as I have seen a yoga instructor teach throughout her entire pregnancy, so I know it's possible. Anyway, I'll be back to share what I've learned. :)

smb