Dennis Hopper and Michelle Phillips
Length Of Marriage: 9 days
Details are hazy on this one, in keeping with the haziness of Hopper's life circa 1970. Hopper was a whirlwind of free love, public nudity, heavy drug use, and occasional acting. Apparently, Phillips (who was in The Mamas & the Papas) and Hopper quickly married after a random visit to his Taos compound. An account in the UK's Daily Mail says they divorced because of Hopper's "unnatural sexual demands."