Going from obscure actor to Hollywood golden boy in just a handful of years, Matt Damon became an instant sensation when he co-wrote and starred in Good Will Hunting. With his Best Original Screenplay Oscar (shared by co-writer and co-star Ben Affleck), he was ensured a place on the Hollywood "It" boy roster. A product of Cambridge, Massachusetts, where he was born on October 8, 1970, Damon grew up in prosperous surroundings with his tax preparer father, college professor mother, an... d older brother.

At the age of ten, he made the acquaintance of one Ben Affleck, a boy two years his junior who lived down the street. The two became best friends and professional collaborators. Educated at Cambridge's Rindge and Latin School, Damon was accepted at Harvard University, where he studied for three years before dropping out to pursue his acting career. During his time there, he had to write a screenplay for an English class: it went unfinished, but it would later be dusted off and turned into Good Will Hunting.

Arriving in Hollywood, Damon got his first break with a one-scene part in Mystic Pizza (1988). However, his film career failed to take off, and it was not until 1992, when he had a starring role in School Ties, that he was again visible to movie audiences. As the film was a relative failure, Damon's substantial role failed to win him notice, and he was back to laboring in obscurity. It was around this time, fed up with his Hollywood struggles, that Damon contacted Affleck, and the two finished writing the former's neglected screenplay and began trying to get it made into a film.

It was eventually picked up by Miramax, with Gus Van Sant slated to direct and Robin Williams secured in a major role. Before Good Will Hunting was released in 1997, Damon won some measure of recognition for his role as a drug-addicted soldier in Courage Under Fire; various industry observers praised his performance and his dedication to the part, for which he lost forty pounds and suffered resulting health problems. Any praise Damon may have received, however, was overshadowed the following year by the accolades he garnered for Good Will Hunting. His Oscar win and strong performance in the film virtually guaranteed industry adulation and steady employment, something that was made readily apparent the following year with lead roles in two major films. The first, John Dahl's Rounders, cast Damon as a former card shark trying to make good, despite the temptations posed by his ne'er-do-well buddy (Edward Norton). Despite a name cast and preliminary hype, however, the film proved a relative critical and financial disappointment. The same could not be said of Damon's second film that year, Steven Spielberg's Saving Private Ryan. As Ryan's title character, Damon headlined an all-star line-up and received part of the lavish praise heaped on the film and its strong ensemble cast.

The following year, Damon further increased his profile with leads in two more highly anticipated films, Anthony Minghella's The Talented Mr. Ripley and Kevin Smith's Dogma. The former cast the actor against type as the title character, a psychotic bisexual murderer, and featured him as part of an improbably blonde and photogenic cast that included Cate Blanchett, Jude Law, and Gwyneth Paltrow. Dogma also allowed Damon to go against his nice-guy persona by casting him as a fallen angel.

One of the year's more controversial films, it reunited him with Affleck, as well as Smith, who had cast Damon in a bit role in his 1997 film, Chasing Amy. Taking a break from psychosis and religious satire, Damon next turned-up in notable performances in a pair of low-grossing, low-key dramas, The Legend of Beggar Vance and All the Pretty Horses (both 2000), before appearing in director Steven Soderbergh's blockbuster remake of the Rat Pack classic Ocean's Eleven the following year. 2002 found the actor vacillating between earnest indie projects and major Hollywood releases, both behind and in front of the camera. First up was Damon's mentoring of neophyte filmmaker Chris Smith in the Miramax-sponsored Project Greenlight, a screenplay sweepstakes in which in the (arguably) lucky winner got the chance to make a feature film and have the process recorded for all to see on an HBO reality series of the same name. Damon's common-sense presence helped make the show a must-see, even if his protege's film -- the critically-reviled coming-of-age film Stolen Summer -- died a swift death at the box office. Damon had better luck at the summer box office, starring in director Doug Liman's jet-setting espionage thriller The Bourne Identity. Though many expected the film to be overshadowed by his old buddy Affleck's less-edgy The Sum of All Fears -- which was released just two weeks prior -- Damon proved once again that he could open a film with just as much star power as his best friend and colleague. Better yet, Bourne reinforced Damon's standings with the critics, who found his performance understated and believable.

Critics took notice of a disparaging sort, however, when they caught a glimpse of Damon's reunion project with Good Will Hunting director Gus Van Sant, the curiously-styled Gerry. Premiering not long after Stolen Summer at the 2002 Sundance Festival, Van Sant's latest dip into the shallow end of the avant-garde pool featured Damon as Gerry, a mostly-silent young man who gets lost in the desert with another mostly-silent young man, played by Casey Affleck, who also happens to be named Gerry. The improvisational film made little impact on festival audiences, but the star's name was enough to ensure it a limited release. Also in 2003, Damon starred opposite Greg Kinnear in the Farrelly Brothers' broad comedy Stuck On You.

Playing the shy half of a set of conjoined twins, Damon again played against type to the delight of many critics, even if the film was not the hit its makers may have hoped for. A happier box-office fate met The Bourne Supremacy, Damon's return to the role of Jason Bourne in 2004. The actor's biggest leading-man success to date, it reinforced Damon's continued clout with audiences. Staying on the high-powered sequel bandwagon, he was reunited with Brad Pitt and George Clooney for the big-budget neo-rat pack sequel Ocean's Twelve later that year.

2005 proved to be somewhat lower-key for the actor, as he appeared in the troubled flop The Brothers Grimm and joined the sprawling ensemble of the modestly successful geopolitical treatise Syriana. After working seemingly non-stop for a few years, Damon claimed only a call from Martin Scorsese would get him to give up his resolve to take some time off. Sure enough, that call came. The Departed, an American remake of the Hong Kong mob-mole thriller Infernal Affairs, co-starred Jack Nicholson and Leonardo DiCaprio.

Playing the squirmy, opportunistic "cop" to DiCaprio's moral, tormented "mobster," Damon underplayed his part to perfection while managing not to get steamrolled by the all-star supporting cast. Damon continued his seemingly ceaseless work ethic by taking the lead in the Robert De Niro-directed CIA drama The Good Shepherd. In 2007, the actor tapped into his reserve of blockbuster franchises for the three-quels Ocean's Thirteen and The Bourne Ultimatum, the latter of which netted him -- by far -- the largest opening-weekend take of his career to that point. On the indie side, he joined with Mark Ruffalo, Anna Paquin, and Matthew Broderick for Kenneth Lonergan's sophomore directorial effort Margaret, and he contributed his efforts to the endurance-race documentary Running the Sahara.