Sheen, Lohan, Gibson. They're like watching a corpse decay.
It's called being out of touch with reality. Maybe because of alcohol and drugs. Maybe because of adulation and power. Maybe because they live in the La-la-land called show biz.
Whatever, some evil genius has crept into their brains and taken them over. They've exploded, becoming their own horror shows.
And once they shone so brightly.