Jack Black is known for his exuberant energy, but while going through a difficult childhood, Black turned to some dangerous drugs to cope.
Jack Black - Wikipedia
Jack Black: I've Had a Cocaine Addiction Since I was 14 - Project Casting Blog
Robert Downey, Jr., Biography, Movies, Iron Man, Tropic Thunder, & Facts
Vancouver Was Awesome: Jack Black in Vancouver, 1894 - Vancouver Is Awesome
ITV School of Rock: Jack Black's life from teen drug addiction to TV star ex and marriage of 16 years - MyLondon
Jack Black on his early struggles with cocaine use
Jack Black on his early struggles with cocaine use, jack black
Jack Black Celebrity Profile – Hollywood Life, jack black
Jack Black reveals trauma of his brother's death and how he started using cocaine at 14, London Evening Standard