I've seen the first two series of this, I try and catch the third one when I can. I am finding the third series a little too US-centric, though. http://en.wikipedia.org/wiki/Bullshit! , for those who don't know what we're on about.
Have you seen the UK equivalent, "The Bull***t Detective", on BBC3? http://www.bbc.co.uk/bbcthree/programmes/detective/
** EDIT ** Added links.