It's Stephen Colbert Vs. Stephen Hawking in the Battle of Alien Domination

Last night on The Colbert Report, Stephen Colbert skewered everyone's favorite astrophysicist Stephen Hawking for what Hawking believes is the doom of the human species: Being enslaved by an alien race.

When we've got things like T-Shirt cannons, powerpoint and baseball why wouldn't we, the humans, be able to defend ourselves? Every party has a pooper, Hawking!