I really like Namaste Yoga. It was a show on FitTV - each episode is 22 minutes. You can buy 1/2 seasons (6 or 7) episodes or whole seasons (13 shows) on Amazon. I think the 1/2 seasons are around $25, and full season abour $50. They're gentle, but increase in difficulty as the season progresses. I can literally do it and hop right in bed. I've fallen in love with yoga class, but I still think these are great for days when I'm time starved. I'm trying to build a daily exercise habit, and I can fit in 22 minutes almost any day.
Here's a link -
http://www.amazon.com/Namaste-Yoga-C...xgy_mov_text_y