In case you missed what Derren Brown regarded as being an "anus-invertingly unpalatable" idea and what the Guardian called "the worse single hour of television produced in 2009", here is the first part of Michael Jackson: The Live Seance:
Those willing to risk your anus being inverted can catch the rest of the show on YouTube.
It turns out they did, indeed, have a parapsychologist on as an observer. A rather pallid young man who sat in the background on a bar stool and, well, observed. He seemed kind of lost for words as he watched Derek Acorah lead four sequined (and perfectly well-balanced) Jacko "superfans" through the seance. At the end of the show he seemed genuinely concerned, along with many of the viewers no doubt, for the emotional wellbeing of said superfans. One superfan in particular, himself called Michael, had sobbed uncontrollably as his idol (or rather, Derek) spoke to him.
I guess both Derek and superfan Michael have recovered... I gather they are to appear on Harry Hill's TV Burp on Saturday night.