Yoga during Pregnancy

I'm 24 weeks pregnant right now, and I haven't tried yoga yet, but I have recently found a great walking work out tape. It was originally designed for senior citizens, but I love it. It's low impact but it's the equivalent of walking 2 miles, and I can do it inside. I also follow it with stretching and squats, because both of those are supposed to be good to prepare for labor. I have heard that yoga is very helpful, too though. Keep us posted!