Corey Haim
Once upon a time, the Coreys Feldman and Haim were the ultimate teen partnership - most famously in The Lost Boys. And off screen, the pair were inseparable. They partied hard and lived life to the maximum.

But Haim never grew up. Despite being engaged to a Baywatch star (Nicole Eggert, who dumped him due to his increasing drug habit), Corey's life went off the rails - he was once arrested for pulling a fake gun on his business manager.

In 1999, and without a hit movie in years, the showbiz TV show E! gave Corey the opportunity to show the world he had kicked the drugs for good. Unfortunately, he was higher than a kite when he turned up for filming.

More recently, Corey could be found selling his body hair and a tooth on eBay. Rock bottom? No, he didn't get that low until he was declared bankrupt and forced to move back into his Mum's.