Terry Gross

Saturday Night Live's Fred Armisen and rock veteran Carrie Brownstein are the team behind the IFC show Portlandia. "All of the stuff that makes people different, that's the stuff that's celebrated" on the show, says Brownstein. "If you're normal ... it's no fun."

The scientist is known as much for his contributions to theoretical cosmology and quantum gravity as for his willingness to make science accessible for the general public. His work is the topic of a new biography by science writer Kitty Ferguson.

The comedian's latest special, Live at the Beacon Theater, was released in Early December. C.K. talks about why he went with Web distribution this time, and reflects on his award-winning TV series, his relationship with other comedians and his USO appearances.