She attended Saint Ann school in Brooklyn Heights, and when she was ten, family friends suggested to her parents that they should take her to a modelling audition. This led Jennifer to a modelling career and she soon began appearing in magazine ads, and then later in commercials.
Her acting debut came in an episode of the British horror-anthology series "Tales of the Unexpected" (1979). Her first movie experience came when a casting director introduced her to legendary filmmaker Sergio Leone, who was seeking an actress who could fill the role of a young girl to dance in his dramatic epic, Once Upon A Time In America (1984).
Although having little screen time, the few minutes she was on-screen were enough to reveal her talent. After Leone's movie, horror master Dario Argento signed her to play her first starring role in his thriller Phenomena (1985). The film made a lot of money in Europe, but unfortunately was heavily cut for American distribution.
The late eighties saw her appearing in a smash hit and three lesser seen films. Amongst the latter was her roles in ɴoile (1988), as a ballerina, and in Some Girls (1988), where she played a self absorbed college freshman. The smash hit was Labyrinth (1986), released in 1986. Jennifer got the job after a nation-wide talent search for the lead in this fantasy directed by Jim Henson and produced by George Lucas.
Her career entered in a terribly calm phase after those films, until Dennis Hopper, who was impressed after having seen her in Some Girls, cast Jennifer as an ing鮵e small-town girl in The Hot Spot (1990), based on the fifties crime novel Hell Hath No Fury. It received mixed critical reviews, but it was not a box office success.
The Rocketeer (1991), an ambitious Touchstone super-production, came to the rescue. The film was an old-fashioned adventure flick about a man capable of flying with rockets on his back. Critics saw in Rocketeer a top-quality movie, a homage to those old films of the 30s in which the likes of Errol Flynn starred.
After Rocketeer, Jennifer made Career Opportunities (1991), Mulholland Falls (1996) and Inventing the Abbots (1997).
In 1998 she was invited by director Alex Proyas to make Dark City (1998), a strange, visually stunning science fiction extravaganza. In this movie, Jennifer played the main character's wife, and she delivered an acclaimed performance. The film itself didn't break any box-office record but received positive reviews.
This led Jennifer to a contract with Fox for the TV series "The $treet" (2000) , a main part in the memorable and dramatic love-story Waking the Dead (2000), and more important, a breakthrough part in the polemic and applauded independent Requiem for a Dream (2000), a tale about the haunting lives of drug addicts and the subsequent process of decadence and destruction. In Requiem, Jennifer had her career's most courageous, difficult part, a performance that earned her a Spirit Award Nomination.
She followed this role with Pollock (2000), in which she played Pollock's mistress, Ruth Klingman.
Most recently, Ron Howard chose her to co-star with Russell Crowe in A Beautiful Mind (2001), the film that tells the true story of John Forbes Nash Jr., a man who suffered from mental illness but eventually beats this and wins the Nobel Prize in 1994. Jennifer played Nash's wife and the Oscar for Best Supporting Actress.
--Roger Dalazen, IMDB.com
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