I was up late as I couldn't sleep and there was a show on Discovery Health called "The Laughter Effect" I think hosted by the very cute(in my opinion anyway) comedian Kathy Griffin. At one point they have a guy comedian who their sending out on special assignments, well when they come back from one of the commercial breaks he's in the studio with Kathy and she's tickling him while talking about laughter. Then it goes into a segment of him doing stand-up talking about tickling. They go even further by showing this 17y/o boy who was picked by Intel to do a study on laughter where they took an MRI of the brain to see what areas are involved in laughter they had the participants listen to stand up then the next time they tickled them unfortunately they didn't show that part. Anyway it was a neat and interesting show with some tickling mentions throughout the show.