I'm guessing he's referring to Roman Polanski (sex with a 13 year old girl) and Victor Salva (sex with a 12 year old boy). I wouldn't say that '2' is 'so many Hollywood directors'.
Media are quick to call those acts 'pedophilia', which is a psychological term, not a legal one. In reality, 'pedophilia' refers to "a sexual preference for children, boys or girls or both, usually of prepubertal or early pubertal age". It has little to do with acting on those preferences. In the US, the legal terms for the act would be 'statutory rape' (pubertal before the age of consent) or 'child molestation' (prepubertal). The age of consent varies between states (16-18), and even more so between countries (from less than 12 to 21+) [1].
Just to illustrate that this is culturally defined and that the raising of the age of consent is a fairly recent development:
"In the United States, by the 1880s, most states set the age of consent at 10-12, and in one state, Delaware, the age of consent was only 7. A New York Times article states that it was still aged 7 in Delaware in 1895" [2]
I'm guessing that he's referring to the story involving Corey Haim. He did an interview with Nightline a while back and said that pedophilia was Hollywood's number one problem. After the interview a number of former child stars spoke out about the commonality of child sex abuse in Hollywood. It's one of those stories that you don't want to blow out of proportion and paint all of Hollywood with a wide brush, but you certainly don't want to dismiss the issue either.
