There is a huge interest in this area but I've seen very few sites devoted to it. There are a few text based sites, tons of yahoo groups (many of which have become spam dumps) but very few actual photo or video sites. Jet did a video a little while ago called "Going Under".

Speaking not as a lawyer but as someone with an interest in this type of thing, here are my views. It might be a good idea to consult with a lawyer regarding this just to be safe.

Of course there is always the possibility of staging it if you are worried about the legalities of it. But any trained hypnotist will tell you that you cannot make someone do something under hypnosis that they do not want to do, however, having said that, keep in mind that if you release the inhibitions of someone to do that which they have wanted to do deep in their unconscious mind, you run the risk of their embarrassment when it's all done. If it is something you want to try, get a real hypnotist who knows what they are doing so the models will know what they are getting into and make sure they are okay with the final result. Or, simply stage it. But if you do, just make sure that the acting is good. People with any fetish can always spot a phony.