5x111 - Mark Devlin

August 13, 2009

Glenn Beck loses his sponsors, and Mark Devlin uses giant balloons to life telescopes to the edge of space.

5x112 - Bill McKibben

August 17, 2009

Reporters get so desperate they'll even work for a newspaper, and Bill McKibben lowers carbon dioxide levels by not exhaling when he talks.

5x113 - Robert Wright

August 18, 2009

5x114 - Ang Lee

August 19, 2009

Ang Lee captures the hope and optimism of tired, dirty kids in his movie, "Taking Woodstock."

5x115 - Chris Matthews

August 20, 2009

The Earth's population nears 7 billion, and Chris Matthews discusses his documentary, "The Kennedy Brothers."

5x116 - Cory Booker

September 14, 2009

The health care debate rages on, MTV's VMAs deliver a shock, and Cory Booker admits he is the mayor of Newark.

5x117 - Christiane Amanpour

September 15, 2009

Christiane Amanpour is going to make Americans care about the rest of the world with her CNN show "Amanpour."

5x118 - Tony Danza

September 16, 2009

Obama indoctrinates America's school children, Tucker Carlson reveals Muslims' influence on textbooks, and The Flaming Lips perform.

5x119 - Frank Bruni

September 17, 2009

Stephen resurrects the U.S. military technique of staring at a goats and Frank Bruni talks about mastering his addiction to compulsive eating as a food critic for the New York Times.

5x120 - Tue, Sep 22, 2009

September 22, 2009

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

5x121 - AJ Jacobs

September 23, 2009

AJ Jacobs' life experiments include following all the rules of the Bible, trying to be the most rational person alive and radical honesty.

5x122 - Ken Burns

September 24, 2009

The Republican Party is accused of racism, another holiday is under attack, and Ken Burns makes a documentary about national parks.

5x123 - Sheryl WuDunn

September 28, 2009

Sheryl WuDunn believes giving women loans and educating girls is the way to lift developing nations out of poverty.

5x124 - Matt Latimer / Out Of The Closet

September 29, 2009

An exciting new tobacco product hits the market, and Matt Latimer recalls his Bush speechwriting days.

5x125 - Wed, Sep 30, 2009

September 30, 2009

Stephen has an update on his space treadmill, and he'll evolve Richard Dawkins' book into tiny shreds of paper.

5x126 - Francis Collins

October 1, 2009

Francis Collins informs Stephen that it's going to take time for stem cell research to give him crab claws.

5x127 - Arne Duncan

October 5, 2009

President Obama proposes a longer school year, and Arne Duncan could only get a job as a secretary.

5x128 - The Mountain Goats

October 6, 2009

The Mountain Goats perform "Psalms 40:2" from their album, "The Life of the World to Come."

5x129 - Alison Gopnik

October 7, 2009

Doctors invent a radical new surgery, and Alison Gopnik says babies can help us understand deep philosophical questions.

5x130 - Thu, Oct 8, 2009

October 8, 2009

The media attacks Glenn Beck, Rush Limbaugh may buy a football team, and Colin Beavan makes no environmental impact.

5x131 - Shashi Tharoor, Dr. Sanjay Gupta

October 12, 2009

Stephen takes on Norwegians for giving Obama the Nobel Peace Prize, plays tennis with James Blake and talks zombies with Sanjay Gupta.

5x132 - David Javerbaum, Sylvia Earle

October 13, 2009

Stephen posts Twitter updates on Miley Cyrus, talks fetuses with David Javerbaum and asks Sylvia Earle why he should care about the ocean.

5x133 - Amy Farrell, The RZA

October 14, 2009

Stephen gets angry over health care reform, discusses obesity with Amy Farrell, and talks wisdom with the RZA.

5x134 - Jerry Mitchell

October 15, 2009

Stephen proves that mayo is the illest condiment, asks Jerry Mitchell what a newspaper reporter is and unveils his new portrait.

5x135 - Cornel West

October 26, 2009

Stephen criticizes Washington State, endorses your job application and disagrees with everything Cornel West stands for.

5x136 - Tue, Oct 27, 2009

October 27, 2009

The Catholic Church reaches out to former members, and Gail Collins talks about the modern American woman.

5x137 - Brian Cox

October 28, 2009

Stephen finds out what broke the largest particle accelerator and preps for his interview with Brian Cox by watching "Baby Einstein" tapes.

5x138 - Bill Simmons

October 29, 2009

Stephen talks to Rosanne Cash about torturing detainees with music and discusses "Teen Wolf" with Bill Simmons.

5x139 - Nicholas Thompson

November 2, 2009

Stephen sponsors the U.S. speedskating team, analyzes Arnold Schwarzenegger's breakfast and disputes the end of the Cold War with Nicholas Thompson.

5x140 - Andrew Sullivan

November 3, 2009

Stephen makes history with the U.S. Speedskating team, covers a gay couple's arrest on Mormon Church property and wants Andrew Sullivan to admit he's wrong.

5x141 - Harold Evans

November 4, 2009

Stephen declares Barack Obama the loser, gets dunked in water by Al Gore and asks Harold Evans if he's going to be a chimney sweep.

5x142 - Thu, Nov 5, 2009

November 5, 2009

Stephen puts Canada on notice with Joey Cheek, introduces Vaxaconda and talks to William Bratton about McGruff the Crime Dog.

5x143 - Mon, Nov 9, 2009

November 9, 2009

Stephen asks Mike Castle why he can't marry a chicken, helps Katherine Reutter win a gold medal, and talks art with Thomas Campbell.

5x144 - Maria Shriver

November 10, 2009

Stephen defends Barney Frank for not recognizing marijuana, enjoys a Taser XREP ad and feeds ice cream to Maria Shriver.

5x145 - Christopher Caldwell

November 11, 2009

Stephen believes bankers are God's representatives, criticizes "Sesame Street" and asks Christopher Caldwell where the Muslim pope is.

5x146 - Woody Harrelson

November 12, 2009

Stephen uses Miracle Whip money to buy mayo, claims Lou Dobbs' audience and shaves Woody Harrelson's head.

5x147 - Mon, Nov 16, 2009

November 16, 2009

Stephen shows Barack Obama how to greet foreign leaders, offers to sing in Aerosmith, and discusses architecture with Paul Goldberger.

5x148 - Malcolm Gladwell

November 17, 2009

Stephen talks to Marc Kielburger about child labor, skateboards with Jackie Speier and asks Malcolm Gladwell to explain a New Yorker cartoon.

5x149 - Norah Jones

November 18, 2009

Sarah Palin has a 400-page book, "2012" takes the world by storm, and Norah Jones talks about her famous father, Indiana.

5x150 - Thu, Nov 19, 2009

November 19, 2009

The Senate introduces a tax on plastic surgery, and Elvis Costello plays "Cheap Reward" with Stephen.

5x151 - Dan Esty, Cevin Soling

November 30, 2009

Stephen talks to Dan Esty about global warming, forces Joseph Cirincione to play "Sanction, Bomb, Marry?" and compares school to prison with Cevin Soling

5x152 - Tue, Dec 1, 2009

December 1, 2009

Stephen profiles a made-up district, discusses alien Jesus with Guy Consolmagno and helps Sherman Alexie save part of white culture

5x153 - Wed, Dec 2, 2009

December 2, 2009

Stephen critiques President Obama's speech, presents a device that lets him poop whenever he wants, and questions Craig Watson's innocence

5x154 - Thu, Dec 3, 2009

December 3, 2009

Stephen covers Tiger Woods' car crash, tries out for the U.S. skeleton team and talks to Janet Napolitano about the color-coded threat level.

5x155 - Mon, Dec 7, 2009

December 7, 2009

Bill T. Jones describes how Fela Kuti fought against the Nigerian government with his music.

5x156 - Senator Bernie Sanders, Andy Schlafly

December 8, 2009

Stephen gives Bernie Sanders a chance to address the vicious socialist rumors and discusses the best of the public with Andy Schlafly.

5x157 - Wed, Dec 9, 2009

December 9, 2009

Stephen appeals to the monkey demographic, gets a visit from Krampus and calls out Goldman Sachs with Matt Taibbi.

5x158 - Thu, Dec 10, 2009

December 10, 2009

Stephen details Russia's battle plan for Afghanistan, tries out for the U.S. bobsled team and puts words in Lara Logan's mouth.

5x159 - Snoop Dogg

December 14, 2009

Stephen interviews President Obama's cardboard cutout, signs Katherine Reutter's thigh and pre-censors Snoop Dogg.

5x160 - Alicia Keys

December 15, 2009

John Slattery sells gold, Stephen relays the story of Treesus, and Alicia Keys performs her hit song.