President Obama is to appear on the 8 December 2010 episode of Mythbusters. Apparently he will set up the show's third test of the legend that Archimedes "set fire to an invading Roman fleet using only mirrors and reflected rays of the sun." (The previous tests were on the 29 September 2004 and 25 January 2006 episodes.)
The Secret Service checks for this one must have been amusing. "Mr. Hyneman, can you explain why your mustache has traces of C4?"
Though I enjoy the show enormously, I hold out no hope that the President's appearance itself will be entertaining. Mythbusters' scripted banter is invariably bad and I don't see Mr. Obama improvising anything witty. He's a smart man, but not a funny one.