This is a great one from Gawker.
Hypnotists need to be very careful: David Days, a hypnotist performing in Portland, England, left three people in a trance on Friday night after being knocked out during a fall in the middle of his act.

Luckily, the people were fine, because there is no such thing as a hypnotic trance. Kidding! Obviously, hypnotic trances are totally real, and these poor, trapped people were saved only because Days regained consciousness and used his considerable mentalist skills to bring them out of their trances. Believable? Read more here.