Bob LutzFmr. Vice Chairman, General Motors
John WaltersHimself - ABC5 WOI-DT Des Moines Sports Director
Brad EdwardsHimself - ABC5 WOI-DT Des Moines Chief Meteorologist
Dale BrykHerself - Natural Resources Defense Council
Joshua FoerHimself - Author, 'Moonwalking with Einstein'
Susan RiceHerself - U.S. Ambassador to the United Nations
Tom RidgeHimself - Former Director, Dept. Homeland Security
Rex RyanHimself - New York Jets Head Coach
Al HuntHimself - Executive Washington Editor, Bloomberg News
DevoThemselves - Musical Guest
Raj PatelHimself - Author, 'The Value of Nothing'
Daryl BemHimself - Professor Emeritus, Cornell University
Amy ChuaHerself - Author, 'Battle Hymn of the Tiger Mother'
Samer ShehataHimself - Center for Contemporary Arab Studies, Georgetown University
Sherry TurkleHerself - M.I.T. Professor: Author, 'Alone Together'
Bob AdlerHimself - Consumer Product Safety Commission
Fun.Themselves - Musical Guest
Dan GrossHimself - President, Brady Campaign to Prevent Gun Violence
Tom CreelSouth Dakota Governor Dennis Daugaard
Ed HelmsNarrator - 'The On Notice Board: A Wonder of the Modern Age'