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.
