There are so many types of yoga DVDs. Some yoga DVDs have a "power" focus. The emphasis is strength and endurance. Some yoga DVDs are designed to help you with flexibility. Some are restorative. They have gentle poses that are not extreme in the flexibility nor the endurance demands but have a huge feel good factor. Some DVDs include poses that work on balance. Most popular yoga DVDs in the West are "Vinyasa" style. These entail flowing from one pose to the next. Power yoga is a demanding version of Vinyasa. Non Vinyasa styles are really good if you want to perfect your yoga form and alignment. Since there is no constant moevement from one pose to the next you get to take your time to acheive each pose to the best of your ability.
Some of my favorites:
a. Altar of the heart - Tilak Pyle. A combination of balance, flexibility and endurance. It is niether too gentle nor very demanding. Emphasis on alignemnt and form cues are very good. Music is one of the best. No new age woo-woo talk track.
b. Yoga Shakti - Shiva Rea. Shiva makes the best produced, brilliantly shot yoga DVDs. Her style is unique and she is a superb and inspiring teacher. Yoga Shakti has loads and loads of material. It has one beginner practise and several intermediate practices. Lots of room for growth.
c. Anything by Erich Schiffman. Erich is one of the best teachers for yoga form. The production values are nothing great on his DVDs (Except Yoga Mind and Body with Ali Mcgraw wgich is spectacular). But the yoga instruction is outstanding. Backyard Backbends by him is one of my favorite practises. He also has a Backyrd Beginners DVD which is good for the first year of learning yoga (and even beyond).
d. Rodney Yee. He demonstrates excellent form but his cueing is minimalist. I love that style for when I dont want too many words during my practise. My two favorites by Yee and Power Yoga Conditioning and Yoga for energy. His new AM yoga (available from collage) has five 25
minute practises and I have my eye on acquiring it from the reviews.
e. Power Yoga for Strength and Conditioning by Yoga Zone. This is an oldie but goodie for sweaty and endurance focused Yoga.
f. Baron Baptiste - I like all his DVDs but he is a very woo-woo teacher.
For gentler Yoga I like Rainbeau Mars Yoga for Tranquility and Yoga For Beauty Dusk. Also Crunch Candlelight Yoga by Sara Ivanhoe.
I think Bryan Kest is on par on the woo-woo with Baptiste but his yoga sessions are great. I can tune out woo-woo ness for Bryan Kest and Baron Baptiste beause the yoga is good. Rainbeau can be a bit woo-woo too. The rest on my list are strictly non-woo-woo.