Jonah Hill partied with P. Diddy to prepare for his new movie.

The actor loved working with the rapper on 'Get Him To The Greek', but admits spending three days in Las Vegas with the star - who plays a record company boss in the film - wasn't the best way to get ready for filming.

He said: "It was pretty cool working with him. I've got to say awesome. He really helped me get into character. He and his friends took me and my best friends to Vegas the weekend before we started shooting and gave us the full P. Diddy experience for 72 hours. And I recommend, if you're ever about to start a four-month shoot as the lead in a movie, the three days before should not be spent partying with Diddy in Vegas."

Jonah also praised eccentric movie director Woody Allen, revealing him to be his comedic inspiration.

He added: "Woody Allen, to anyone who makes comedic films, is pretty much the premier comedic filmmaker of all time. I think he achieved so much emotion . and so much beauty in these films while still making them hysterically funny. "