A lifelong Southern Californian, Nathan Callahan was born in Hollywood, raised in the glow of Rocketdyne and ripened in Orange County during the halcyon days of John Schmitz.

Responsible for the initial creation of the Orange County Great Park, Callahan has inadvertently earned a reputation as a cynic, clairvoyant journalist, traitor, reverend, and bon vivant. According to Congressman, actor, talk show host and U.S. presidential candidate "B-1" Bob Dornan, Nathan Callahan is a cowardly pseudonym for a Marxist employed by the Democratic Party to run campigns for U.S. congressional candidates. In the real world, Callahan has been employed as a cook, an auto worker, a graphic designer, a musician, a municipal adminstrative aide, a xeriscaper, a window dresser, a bookseller, a political consultant, and a writer.

In 1988, Callahan teamed with Will Swaim — future founding editor of the OC Weekly — to publish The County, a short-lived zine of leftist political and social commentary that nowadays can be found in the University of California, Irvine Library archives.

In the early 1990s, Callahan co-wrote and edited "Shut Up, Fag!": Quotations from the Files of Congressman Bob Dornan with William Payton. With its unsettling title and contemptible subject matter, the book became a B-list cult success. TV and radio interviews followed. So did Dornan.

A contributing writer for the OC Weekly beginning with its premier issue in 1995, Callahan was recognized by The New York Times for helping break through Orange County's conservative media stranglehold. After an intense migraine, he left the Weekly in 2005.

Nathan Callahan can be heard broadcasting from the University of California at Irvine, his alma mater, with co-host Mike Kaspar on KUCI talk radio Tuesday mornings from 8:00 until 10:00 Pacific Time on the programs Weekly Signals, and filmschool. Callahan and Kaspar have interviewed some of the world's most fascinating people including Seymour Hersh, Barbara Ehrenreich, Arianna Huffington, Joseph Wilson, Daniel Ellsberg, Errol Morris, Garrison Keillor, Helen Thomas, John Sayles, Lewis Lapham, Philip Glass, Frederick Wiseman, Thomas Frank, Paul Krugman, Terry Jones, Susan Jacoby, Chalmers Johnson, Haskell Wexler, Robert Fisk, Anne Lamott, and George McGovern.

Outside the airwaves, Callahan collaborates with Bob Aul on the darkly humorous, internationally notorious comic strip Pet President.

Suburban Manners: An Irreverent View of Politics, Wealth and Culture in Orange County, California and Interviews are Callahan's latest published works. When not walking, he is an avid coffee drinker, reader, and online junkie.