The Cast of MTV's 'Jersey Shore' and Newark Mayor Cory Booker

G.T.L... K? That's right! The cast of Jersey Shore fist pumps their way onto this episode of Katie to talk about the hit MTV reality show's six seasons and upcoming finale. Our tour of New Jersey doesn't end at the Shore — we're also joined by Newark Mayor Cory Booker who tells us about his recent participation in the SNAP Challenge. Mayor Booker just finished living off of a food budget of $30, the equivalent of what is provided to people receiving food stamps in the State of New Jersey. Plus, Alan Alda comes on to talk about his scholarly quest for sixth graders to answer the question: "What is time?"