Gladiator star Russell Crowe says his kids are very excited about the fact that he is making a film with Harry Potter star Emma Watson

Gladiator star Russell Crowe says his kids are very excited about the fact that he is making a film with Harry Potter star Emma Watson.

The 48-year-old actor's sons Charles, eight, and Tennyson, five, are very impressed that the actress has joined the cast of his forthcoming film Noah because they are big fans of the "Harry Potter" film series, in which she played Hermione Granger, reported Contactmusic.

"My kids are flipping out that I'm going to work with Hermione," Crowe tweeted.

The actor, who is married to singer-actress Danielle Spencer, has previously treated his children to a Harry Potter studio tour in London, England and says they impressed their guide with their intelligent reasoning.

Referring to the houses which the Hogwarts students are sorted into in the Harry Potter stories, Crowe said, "Harry Potter tour, guide assumed my boys would be gryffendor, no way they say, Ravenclaw, why? They are the smart kids and none of them die."

Noah, which is directed by Darren Aronofsky, will see the actor portray the Biblical ark builder, while Watson will play Ila, the love interest of his older son Shem (Douglas Booth).

The film is scheduled for release in 2014.

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Russell Ira Crowe is an Academy Award-, BAFTA-, Golden Globe-, and Screen Actors Guild Award -winning New Zealand and Australian actor. His acting career began in the early 1990s with roles in Australian TV series such as Police Rescue and films such as Romper Stomper. In the late 1990s, he began appearing in US films such as the 1997 movie L.A. Confidential. In the 2000s, he has been nominated for three Oscars, and in 2000, he won the Academy Award for Best Actor for his starring role in the film Gladiator. Crowe is also co-owner of National Rugby League team the South Sydney Rabbitohs.