Cinematical just received this exclusive poster for What Just Happened? (click to enlarge), which comes to us from director Barry Levinson (Rain Man, Wag the Dog). Based on producer Art Linson's memoir What Just Happened? Bitter Hollywood Tales from the Front Line, the film stars Robert De Niro as a middle-aged Hollywood producer who tries to juggle an actual life with an outrageous series of crises in his day job.

As you can see from the poster, however, this puppy is packed with talent. You've got De Niro, Sean Penn, Bruce Willis, John Turturro, Stanley Tucci, Catherine Keener and the list goes on. When What Just Happened? premiered earlier this year at the Sundance Film Festival, Cinematical's James Rocchi described it as "movie geek heaven," saying De Niro produces "his best 'sly' comedic work since (probably) Wag the Dog." And how can you not love that poster and its tagline? Hilarious. Really looking forward to seeing this one when it arrives in a few months. (Check out the full synopsis after the jump)

What Just Happened? is set to hit theaters on October 3.