Troubled actor Robert Downey Jr. was arrested at 12:10 am/PST in Culver City, Calif., for suspicion of being under the influence of a controlled substance. According to Access Hollywood, the Ally McBeal star — who was on foot at the time — was given a urine test and released. He reportedly has since checked himself into a rehab center. Downey is due back in court on Monday in Indio, Calif., on drug charges stemming from his Thanksgiving weekend arrest in Palm Springs. Meanwhile, TV Guide Online has learned that Ally McBeal producers have been holding high-level meetings all day to determine what impact, if any, Downey's latest legal scuffle will have on the show — which is in the midst of shooting its next to last episode of the season.