I quite agree Inspiration - my problem with Derren (he'll be mortified) is the hypocrisy in the bad science he perpetuates. When he's doing tricks like Oracle, we know it's a trick, and tbh I'm not that bothered about trying to pick it apart. I think that whole discussion arose out of the "stooge" debate, and I'm happy that an accomplice could be used to nick carRAB, but possibly isn't even necessary. Anyway, I find this interference acceptable in terms of the trick.
The problem is he often produces 'serious' scientific pieces where he'll expose some fakery or other, but then juxtaposes it with his own nonsense re NLP, suggestion and hypnosis. I don't think the distinction between the two is clear (we've seen them intertwined in the same show), and as such there are many, many people who believe in hypnosis/NLP to a stupid degree because of him.
(Plus, shows like Hero, which had no tricks at all in, and just somebody knowingly playing role plays, which is just out-and-out garbage.)