These arm balance videos shown generally include poses where one or both legs are positioned on the back of one or both arms, making it easier to balance on the hands. Also included, even though it breaks these rules, is mayurasana, where the belly rests on the upper arms.
For people who are relatively new to yoga and relatively new to the idea of balancing on their hands, here's a step-by-step introduction for getting your feet of the ground for crow pose... without jumping.
Do you really need to do crow pose with your eyes closed?
Not really. I usually demonstrate crow pose with the eyes closed to show how feel your weight shift from feet to hands, so that you know when you can lift your feet simply by feeling your connection with the ground.
Some tips for side crow pose (or "Bakasana"), including how to move into rotated flying splits (eka pada koundinyasana 2).
So that Eka Pada Koundinyasana (or flying splits) is a little bit easier to learn, here's a progression of exercises for learning the basics of this arm balancing yoga pose.
The following videos each include specific exercises for learning the basics of the astavakrasana arm balance.
A step-by-step look at mayurasana including preparatory actions for the spine, abs and shoulder blades.
Interested in learning how to feel and control your leg muscles?
Sensational Leg Anatomy includes a series of videos teaching simple muscle control exercises. The whole series teaches you to feel and control the major muscles of the legs from the hip bones down to the toes.
You can also get it as part of the Muscle Control Package(Learn to Feel Your Body)
Muscle control not only helps you to control your body, it also helps you to feel it making it easier to balance, improve flexibility and deal with pain and poor posture.
The dance of shiva is handy if you are interested in improving upper body balance and coordination.