Cameron Diaz is "thrilled" her ex-boyfriend Justin Timberlake has been cast as her love interest in the new movie "Bad Teacher" - because his on-set antics are keeping her entertained.

The "Charlie's Angels" actress stars as a junior high school teacher who sets out to steal a colleague's boyfriend, played by Timberlake, in the comedy.

Diaz dated the pop singer for almost four years until they split in 2007, and Timberlake has since found love with actress Jessica Biel. But "The Holiday" star is excited to work alongside her former beau in the film, which also stars Molly Shannon and Jason Segel.

She tells Access Hollywood's Billy Bush, "We're thrilled to have him. He's the best person for the job. He's going to be hilarious. He's clearly a very talented comedian, look at his 'Saturday Night Live' (skits).

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So how does Cameron Diaz feel about getting romantic  even if only onscreen  with ex-boyfriend Justin Timberlake? In a word: thrilled.

"He's the best person for the job. He's going to be hilarious," the actress told "Access Hollywood" host Billy Bush on the Oscars red carpet Sunday.

The former twosome are pairing up in the big-screen comedy "Bad Teacher," in which they'll play the leads. The film  which centers on a teacher (Diaz) who makes a play for her rival's boyfriend (Timberlake) after getting dumped  started shooting this month in Los Angeles.

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Cameron Diaz was definitely one of the best dressed at the Oscars last night, epitomizing an old Hollywood siren in Oscar de la Renta. Proving that good dressing is about the whole package, Cameron completed her beautiful, gold embellished off-white strapless gown with her blonde hair in a cascade across her shoulder and a slick of red lipstick.

Cameron Diaz wore a show-stopping glittery Oscar de la Renta gown posing on her way to present at tonight's Academy Awards. She got her duties over with already, taking the stage with Steve Carell to hand out the best animated feature Oscar.

Cameron stuck with her signature red lip, which is a staple for her these days, and a relatively unfussy side-swept hairstyle. Oscar is a classic choice for Hollywood's biggest night, but tell us what you think about Cameron's whole look - vote on Bella and Fab's love it or leave it polls!

Cameron Diaz has been named the worst Latino actress in the last one year for her role in the film 'The Box'. Diaz has topped the third annual Lazzies Awards list handed out by Latina magazine for poor performances and bad films and TV shows.

Walter Perez landed the worst actor award while 'Fast & Furious' was named worst film. The Lazzies have been announced days before the most famous bad film prize giving, the Golden Raspberry Awards (Razzies), which will be handed out in Los Angeles Saturday.

Producers created this "stunt dummy" of CAMERON DIAZ for scenes in her new movie Knight and Day. Cameron, 37, was filmed on the back of a motorbike driven by TOM CRUISE. But for hairier moments the lookalike mannequin was used and a stuntman took over from Tom, 47. He plays a secret agent she dates in the movie, out in June.

The world's most famous ogre, Shrek, his princess, and motley crew of friends will open.

The Tribeca Film Festival next month, with the final chapter of the successful series making its world premiere in 3-D in New York.

"Shrek Forever After," the fourth installment of DreamWorks Animation SKG Inc.'s series and the first in 3-D, will screen on Tribeca's opening night, April 21.

The festival, one of the most prominent in the United States, will run until May 2.

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Segel has signed on to play a gym teacher in the upcoming black comedy 'Bad Teacher,' starring Cameron Diaz as Elizabeth Halsey.

A potty-mouthed, gold-digging seventh grade teacher looking to hook up with a colleague. While its not yet  clear.

If Segel's character is Diaz's ally or enemy, John Michael Higgins ('For Your Consideration')will play the school's principal, and Lucy Punch has been cast.

As the "model" teacher who stands in Diaz's way. The film will be directed by Jake Kasdan ('Walk Hard: The Dewey Cox Story') and written by Lee Eisenberg and Gene Stupnitsky ('Year One').

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Tom Cruise's son, Connor, has a big crush on Cameron Diaz. Connor hung out on the set of the movie Knight and Day a lot, where his dad and Cameron were working together.  A "source" said that the teen thinks Cameron is "gorgeous" and gets very "shy and nervous" around her. Unfortunately, Connor is 15 years old and Cameron is in her 30s.  He should probably set his sights on someone who would actually be interested in him…like Madonna.

New York Yankees player, A-Rod, was dating Kate Hudson until they split in December 2009. He now seems to have found love with Cameron Diaz. Rumors about them dating came up after the two were seen partying together during the weekend’s Super Bowl festivities.

The duo was spotted together at the Creative Artists Agency’s Super Bowl party in Florida on Saturday night and seemed to be flirting and having fun; thus sparking off rumors.