TONIGHT: Stephen Colbert welcomes author of "Spook: Science Tackles the Afterlife", Mary Roach!

Tonight Stephen welcomes Ramesh Ponnuru, senior editor of the National Review and author of The Party of Death: The Democrats, the Media, the Courts and the Disregard for Human Life.

Tonight Stephen welcomes Ramesh Ponnuru, senior editor of the National Review and author of The Party of Death: The Democrats, the Media, the Courts and the Disregard for Human Life.

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Tonight Stephen welcomes Slate editor in chief Jacob Weisberg, author of The Bush Tragedy. Also, Stephen talks with Tony Campolo, author of Red Letter Christians, about the Chrisitian right's influence on politics.

Stephen Colbert must alter his Christmas plans when he's trapped in his upstate New York cabin by a bear, but he manages to get by with a little help.

The Senate votes to allow guns on trains, and Shai Agassi wants us all to drive electric cars.

Stephen fights Jimmy Fallon over his new ice cream flavor, and Mark Moffett talks about bees.