Tonight, author Lee Gutkind promotes his new book Almost Human: Making Robots Think. Jon begins the show with an in depth look at the Republican presidential candidate debate last week in a continuing show segment, "Clusterf@#k to the White House". Senior Correspondent Aasif Mandvi reporting live from the gates of hell talks with Jon about John McCain's comment at the debate that he will hunt Osama bin Laden to the gates of hell in a segment called "Styx & Stones". Finally, John Oliver gives us a behind the scenes look at the Republican debate.