Well the links you sent are two very different things. The first looks like a person being deeply hypnotised to have a instant orgasm based on a random command. The second is more of a relaxing technique matched with some arousing dialogue to get you in the right mindset to have a great orgasm.
My personal opinion of the first one is that the woman's an actor, I don't believe in deep hypnotism where a random cue or stimulus can make you orgasm. However, I had a lot of curiosity about the 2nd link you sent and gave it a try...for the record, it works!