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Obama on 'The Tonight Show': Six famous presidential TV cameos

Which other sitting presidents have appeared on TV?

- Andrew HeiningStaff writer, Geoff JohnsonContributor, Leigh MontgomeryStaff writer, Andrew MachContributor

'MythBusters' co-hosts Adam Savage (r.) and Jamie Hyneman (c.) exit the White House after filming a segment with President Obama on Monday. (Charles Dharapak/AP)

Obama on 'MythBusters'

As part of an initiative to boost science and math education, President Obama will appear on the Dec. 8 episode of "MythBusters," the Discovery Channel show aimed at debunking popular myths with experimentation and science.

Special effects masters Jamie Hyneman and Adam Savage, together with a team of likable young scientists and, well, geeks, dutifully subject user-submitted "myths" to rigorous testing.

Over its eight-season run, the show has asked many important scientific questions:

  • Does a goldfish's memory last for only 3 seconds?
  • Can a jet engine launch a taxi into the air?
  • Can a playing card kill a person if thrown with enough power?

Perhaps the most popular – and mind-bendingly simple myth, if you ask us – is the question of whether an airplane can take off while on a conveyor belt. (Yep.)

President Obama's MythBusters episode is said to focus on the fabled "Archimedes death ray" – the legend that in the third century the famed thinker used parabolic mirrors arrayed along a beach to set fire to an advancing Roman fleet. The show has addressed the story before – twice – declaring it "busted," but maybe the President will add something to the discussion.