Letterman Skewers AstroNUT

America's new favorite astronaut, Lisa Nowak, was the subject of the Top Ten list on "The Late Show with David Letterman" last night -- as a cautionary tale.

David counted down the "Top Ten Signs an Astronaut Is Trying to Kill You." Our personal favorites were, "She poisons your Tang" and "She keeps stabbing you with a pen that writes upside down."