New York Times outlines the dangerous role ego has come to play in some yoga quarters where yoga and the teachers take themselves and yoga a bit too seriously and self-righteously. Yoga can be and should be fun.
It's a fun piece called The Enlightened Path, With a Rubber Duck.
Enjoy.
(I watched the two You Tube videos and didn't think either of them were that funny or worthwhile, but there are two included in the article.