Terry Gross

Presidential historian Robert Dallek has written about LBJ, JFK, FDR and Ronald Reagan. Now, in his book Nixon and Kissinger: Partners in Power, he tackles two political titans he describes as "self-serving characters with grandiose dreams of recasting world affairs."

Journalist Bill Moyers returns to PBS April 25 with Bill Moyers Journal; the first episode "Buying the War," a 90-minute examination of the role of the press in the run-up to the Iraq War.

Novelist Joshua Ferris makes his debut with Then We Came to the End, a satire about life in a Chicago advertising agency just as the dot-com boom went bust.

Jimmy Wales helped create Wikipedia, the interactive online encyclopedia founded in 2001. Users write and edit Wikipedia entries themselves; the site also has a dedicated corps of editors. There are often "edit wars" over entries — some, including the one headlined "2006 Lebanon War," have been edited and then re-edited thousands of times — and Wikipedia's accuracy has been questioned by some professors and colleges, who forbid students to cite it as a source. But Wikipedia, with versions in 250 languages, is one of the top 10 sites on the Internet.

MTV's new Thursday-night sketch-comedy series Human Giant got its start as a collection of Web shorts, and the rise of MySpace and the viral-video explosion helped it develop a big following online. Terry talks with Aziz Ansari, Rob Heubel and Paul Scheer, three of the comics who power the show's alterna-comedy antics.

Sari Nusseibeh is the president of and a professor of philosophy at al-Quds University, the only Arab university in Jerusalem. He's written a memoir, Once Upon a Country: A Palestinian Life; he's also co-author of the People's Voice Initiative, aimed at building grassroots support for a two-state solution in the Middle East. Until December 2002, he was the representative of the Palestinian National Authority in Jerusalem.

Charlie Savage Talks with Monique Nazareth.

Singer-songwriter Neil Sedaka, who marks his 50th anniversary in the music business this year, helped create what's known as the Brill Building sound in the late '50s and early '60s. He's been inducted into the Songwriter's Hall of Fame, but he got his start as a classical pianist. He joins Terry Gross to talk about his life as a performer — and about The Definitive Collection, a career-spanning greatest-hits compendium.

You may know Irish actor Gabriel Byrne from The Usual Suspects, or from Miller's Crossing, or from Into the West — a film he helped produce, as well as perform in. But before finding his way into acting in his late 20s, he tried his hand at archeology, teaching and even short-order cooking. His new movie is Jindabyne.

Journalist Kenneth Weiss writes for the Los Angeles Times, where he has covered the California coast and the oceans for five years. His five-part series "Altered Oceans," written with Usha Lee McFarling, explores how pollution has changed the basic chemistry of the oceans, raising questions about long-term marine health. The series recently won a George Polk Award.