Six degrees of Natalie Portman: Are you up to the challenge?

American actor Peter Sarsgaard starred with Israeli-American actress Natalie Portman in the acclaimed drama "Jackie." The two had previously worked together more than 20 years earlier in the romantic comedy "Garden State."

Portman delivered what's considered one of her greatest underrated performances in the Civil War drama "Cold Mountain." Directed by British filmmaker Anthony Minghella, the film earned seven Academy Award nominations.

American rapper Ludacris played a buddy role in the 2011 rom-com "No Strings Attached" starring Natalie Portman and Ashton Kutcher. The artist-turned-actor will next be seen in "The Fate of the Furious" in April 2017.

American actress Scarlett Johansson and Portman played sisters in the 2008 16th-century English drama "The Other Boleyn Girl." Portman played Anne Boleyn, the ill-fated second wife of the notorious King Henry VIII.

Before building dreams with DiCaprio in "Inception," American actor Joseph Gordon-Levitt starred with Portman in the dark comedy "Hesher." While the film received lukewarm reviews, critics praised the strong conflicted performances of the cast.

Julia Roberts, who rocketed to fame in "Pretty Woman" from Israeli producer Arnon Milchan, co-starred with Portman in 2004's "Closer." In a recent interview, Roberts called Portman "always lovely, always watchable, always interesting."

Almost two decades before starring in the survival thriller film "The Revenant" with American actor/adventurer Tom Hardy, Lukas Haas co-starred with Portman in the science fiction comedy "Mars Attacks!"

In addition to starring together in all three "Star Wars" prequels, Portman and Scottish actor Ewan McGregor also starred in the 2015 western "Jane Got a Gun." The film, which came during a busy year for the actress, received largely positive reviews.

British actor Tom Hiddleston, who narrates just as well as he acts, starred as the mischievous Loki opposite Portman in the 2013 film "Thor: The Dark World." The superhero flick was both a critical and box office success.

American director Darren Aronofsky received an Academy Award nomination for his work with Portman in the dance drama "Black Swan." The Israeli-American actress scored a Best Actress Oscar for her portrayal of a tormented ballerina.

After helping Hugh Jackman in "X-Men," American actor James Marsden starred opposite Portman in the 2001 supermodel comedy "Zoolander." Marsden is now starring with American actor Jimmi Simpson on the hit HBO series "Westworld."

British actress Rachel Weisz co-starred alongside Israeli actor Oded Fehr in the action adventure films "The Mummy" and "The Mummy Returns." The franchise is currently being rebooted with Tom Cruise, Russell Crowe and Sofia Boutella.