I've been studying these systems for a while now, I am hoping to start training in the Lei Shan Dao (lighting and thunder path) of Taoist Qigong/Neigong. The third video down, about john chang (not his real name), he belongs to a branch of the Lei Shan Dao called Mo Pai.
What I find absolutely amazing is that many of these techniques are identical or nearly identical to those employed by Einstein, Tesla, and others like Edgar Cayce etc.
There are things beyond imagination waiting for those brave enough to explore...
It is said that soon after his enlightenment the Buddha passed a man on the road who was struck by the Buddha's extraordinary radiance and peaceful presence. The man stopped and asked, "My friend, what are you? Are you a celestial being or a god?"
"No," said the Buddha.
"Well, then, are you some kind of magician or wizard?"
Again the Buddha answered, "No."
"Are you a man?"
"No."
"Well, my friend, then what are you?"
The Buddha replied, "I am awake."