Patricia Walden: Yoga for beginners (GAIAM)
good for beginners (60 minutes) plus two additional workouts (backbends and forward bends to take you to the next level)
old fashioned look but good stuff
Suzanne Deason: Yoga conditioning for weight loss (forget about the weight loss part) (GAIAM)
Good stuff with four varieties of every posture (you can choose according to your level you're on )
Ciao
Have fun