Tatum O'Neal

Tatum still holds the title of the youngest actor to win an Oscar at age ten for her role in Paper Moon. Perhaps then, she's testament to the dangers afoot for child stars when you consider her persistent problems with crack and heroin. Along her road of addiction, Tatum had a brief fling with the king of controversy, Michael Jackson, in 1979, who allegedly shied away with nerves whenever she moved in to kiss him. Now, Tatum, whose kids have been taken away, is attending drug treatment programs after an arrest in July 2008.