This episode of More Than Human is titled, "What's on Your Mind?":

http://dsc.discovery.com/schedule/episode.jsp?episode=0&cpi=24292&gid=11490&channel=DSC

It will be re-aired on 26 and 28 March 2004 at 1:00 PM Eastern:

http://dsc.discovery.com/schedule/series.jsp?series=24292&gid=11490

I did not see the show, but would note that the accuracies you reported are somewhat better than 50/50. For example, 16/25 correct calls for the polygraph equals 64% correct, and 17/25 correct calls for the FBI agent and poker player equals 68% correct.

The National Academy of Sciences noted in its report, The Polygraph and Lie Detection, that  there is essentially no evidence on the additive validity of polygraphy (its ability to add predictive value to that which can be achieved by other means). The results obtained in this More Than Human experiment seem to be consistent with this.