I love Baron Baptiste's "Power & Precision Yoga." It has four 10-15 minute segments ("Water," "Fire," "Earth" and "Wind"), each with a different focus:
1. "Water" - standing poses (mostly sun salutations)
2. "Fire" - strength
3. "Earth" - balance
4. "Wind" - seated/lying poses which have great leg, back and hip stretches.
I almost always skip the stretch portion of a video and add one or two of these segments. It's a wonderful intermediate yoga tape done in its entirety too. I wish he would put it out on DVD!