ZOO checked out these three Hollywood giants as they star together in this new black comedy.

What happens? A top notch cast - led by Robert De Niro as a film producer on the edge of a nervous breakdown - and including Bruce Willis and Sean Penn, mock the Hollywood machine they're a part of.

What's good about it? It's funny, particularly Willis as a ranty, nightmare version of himself who refuses to shave off his shaggy beard - "We're talking about my fucking artistic integrity, goddammit." And most of it is based on real events, although the true identities of the primadonnas is kept secret.

What's bad about it? Actors are full of themselves, movie studios want to make lots of money - it's hardly packed with jaw-to-the-floor revelations.

Verdict: A decent enough comedy, but you'll probably enjoy it more if you're a film-lover who subscribes to highbrow, movie-bore magazine Sight And Sound. Which we assume you aren't.