Less Than Zero: The third time was not the charm for Robert Downey Jr., who was incarcerated on Aug. 25, 1999, after three violations of probation in three years, stemming from his DUI and possession of heroin and cocaine charges in 1996. The actor, who appeared almost proud in his mug shot, served time in the Substance Abuse Treatment Facility prison in Corocan, Calif., for a year.
