Gore Vidal vs. Truman Capote
The year: 1979
The charge: In a 1975 Playboy interview, Capote alleged that fellow writer and longtime rival Vidal had been tossed from a White House party back in 1961 for drunken behavior. A furious Vidal countered the claim by suing Capote for libel.
The verdict: The pair ultimately settled the matter out of court, with Capote grudgingly writing an apology to Vidal.