Kiss Kiss, BANG BANG director Shane Black is relieved he has found his niche in film-making, as scriptwriting makes him deeply miserable.

The Lethal Weapon creator has long been considered a pioneer screenwriter, but the solitary lifestyle is no longer for him.

He says, "Directing is really fun, writing isn't. It's very lonely...It's just you in the room, it's midnight, you're looking out the window.

"You've just noticed the couch and it's hard to tell yourself, 'Now I'm going to think of a funny thing."