from the youtube page:
"Doug Zongker's "Chicken chicken chicken". Presented at the AAAS humor session, February 16, 2007. See http://isotropic.org/papers/chicken.pdf for a PDF"
a pdf!?!? too funny. the audience reactions to the different slides are great.
if you can stand it, watch to the end. the Q&A bit is priceless.
if you have never had to sit through one of these consider yourself lucky.