jonerik writes: "As part of its inevitable 30th-anniversary-of-Watergate coverage, ABC News has this article on the National Archives' search for someone who can recover part or all of the missing 18 ½ minutes of President Nixon's Oval Office tapes, whose existence had been unknown until the Watergate hearings. The famous tape - recorded on June 20th, 1972, three days after the Watergate break-in - was last examined in 1974, but Nixon tape archivist Karl Weissenbach is hoping that nearly thirty years of technological progress can make the difference this time, saying 'We have decided that the time is right and appropriate to determine whether that conversation can be retrieved or recovered.' Stephen St. Croix, one of several forensic audio experts who is interested in taking on the job, says 'You never completely erase a tape. You think you do, but you really don't.'" There's another article in Wired on this quest as well.