Stephen tries out for the U.S. curling team, and Erick Erickson opposes the RNC's purity test.

The military responds to the underwear bomber, and Riley Crane wins a contest to find 10 balloons.

The Senate and House debate health care, and Charles Moore discovers a floating patch of garbage.

America executes fewer prisoners, and James Fowler talks about the power of social networks.

Eugene Jarecki speaks out against large banks, and Morgan Freeman says untrustworthy things.

Obama won't admit we're in the middle of a war, and Raj Patel talks about "The Value of Nothing."

Stephen examines the "Avatar" controversy and talks to John Heilemann about "Game Change."

Americans walk away from their mortgages, and Stephen talks to Kathleen Sebelius.

Stephen wants to dig for coal, and Emily Pilloton uses industrial design to help the world's needy.

Stephen attempts to make an Olympic team, and Stephen Bosworth talks about North Korea.

Stephen races speedskater Shani Davis and overcomes adversity to interview Dick Ebersol.

Stephen reviews Obama's first year in office, examines airport terrorism and discusses national security with John Farmer, dean of Rutgers-Newark Law School.

An unlikely candidate emerges for a New York Senate seat, and Kati Marton discusses communist Hungary.

Paul Begala urges Democrats to fight back, and Mika Brzezinski balances work with parenting.

Stephen demands an iPad and hopes Arthur Benjamin tells him what comes after 14.

Stephen praises Bob McDonnell's speech, and David Gergen examines the State of the Union address.

Stephen wins a Grammy, and Harold Ford Jr. defends his new support for gay marriage.

Stephen pays tribute to J.D. Salinger, and Eliot Spitzer is happy to see Obama tough on Wall Street.

Stephen has advice for getting America back to work, and John Durant wants us to live like cavemen.

A former CIA agent makes startling revelations, and Henry Louis Gates, Jr. analyzes Stephen's DNA.

Sarah Palin writes notes on her hand, and Jonathan Safran Foer urges Americans to eat less meat.

Chris Dodd wants to take away corporate free speech, and George Stephanopoulos drinks a Heineken.

Stephen profiles Chicago's 5th district, and Claire Danes discusses her role as Temple Grandin.

Al Michaels considers an Al Qaeda bobsled team, and Stephen unveils his Vancouver poster to David Ross.

Stephen offends Ujjal Dosanjh and invites Shaun White for a Canadian beer.