In this week's episode, Chris Hassall dropped by and joined the gang as a special guest. Chris started things off by presenting a completely uncontroversial segment about water fluoridation. Next, Elan led a Science Fact or Science Fiction (TM) game about Olympics and sport (during which Darren complained the whole time). Finally, Darren discussed whether or not it is better to leave a light on or turn it off and then on again.