Derren Brown

Derren Brown does use some NLP, Hypnosis, maybe even some trickery, magic, and pretty sneaky stuff in his presentations. 

There is a lot of Derren Brown's stuff out there on the web and with good reason.  Derren has some amazing stuff, and he presents it in such a way that is very entertaining.

Most of it is probably not applicable to most businesses, but it  is very powerful and entertaining stuff.

Here are some great Derren Brown videos and resources...

NLP

Paying With Paper

Subliminal Advertising

Trains Of Thought

How To Use Conversational Hypnosis To Rob Someone