Deep Throat Revealed

From the New York Times:

Former F.B.I. Official Says He Was Watergate's 'Deep Throat'

An ailing and aging former F.B.I. agent in California, W. Mark Felt, has told Vanity Fair magazine that he was the one who leaked certain secrets about Mr. Nixon's Watergate coverup to the Washington Post reporters.

"I'm the guy they used to call Deep Throat," Mr. Felt told John D. O'Connor, a lawyer and the author of the Vanity Fair article, the magazine said today in a press release.

I always thought it was Hal Holbrook.