Ryan O'Neal has fathered four children with three women and has been notoriously bad at raising them all. Most famously he terrorized his two oldest children, Tatum and Griffin (with first wife Joanna Cook Moore) as children, knocking Griffin's teeth out with a baseball bat at age 14 and emotionally abusing them both. When Tatum was 13, he took her to Europe with her friend Melanie Griffith, who was 18 at the time. Tatum wrote in her autobiography that she caught her dad having sex with Melanie in the hotel room. In 2007 he was arrested for allegedly assaulting Griffin with a deadly weapon. In 2008 he and Redmond (his son with Farrah Fawcett) were arrested for meth possession. At Farrah's funeral,
he hit on Tatum, thinking she was a Swedish woman instead of his own daughter.
Huffington Post Katy Hall First Posted: 09/05/09 06:12 AM ET Updated: 05/25/11 02:45 PM ET