Justin Theroux has built the sort of career that makes a simple job description rather difficult. Actor certainly works. So do screenwriter, producer, director, voice actor, and occasional television host. Add novelist and professional motorcycle enthusiast and we'd be making things up—but only just. Theroux has spent decades moving between dark drama, broad comedy, independent films, major Hollywood productions, and wonderfully peculiar television without ever seeming particularly interested in taking the predictable route.

Born on August 10, 1971, in Washington, D.C., Theroux grew up in a family where writing and the arts were hardly unusual career choices. His mother, Phyllis, was a journalist and author, while his father, Eugene, was a corporate lawyer. His extended family includes writers and journalists as well, including travel writer and novelist Paul Theroux. Apparently, putting words on paper was something of a family condition.

Theroux studied visual arts and drama at Bennington College in Vermont before moving to New York City, where he began working as an actor. His early career included stage work as well as smaller film and television appearances. He made his film debut in Mary Harron's I Shot Andy Warhol in 1996 and gradually became one of those actors audiences recognized even if they couldn't immediately remember where they'd seen him.

That problem became increasingly difficult because the answer could have been almost anywhere.

He appeared in Romy and Michele's High School Reunion and later took a role in American Psycho, the dark satire starring Christian Bale as investment banker and enthusiastic psychopath Patrick Bateman. Theroux played Timothy Bryce, one of Bateman's colleagues in a world where business cards could apparently cause more emotional distress than homicide.

Then came David Lynch.

Theroux appeared as director Adam Kesher in Lynch's 2001 film Mulholland Drive, a surreal psychological mystery that has inspired more than two decades of viewers to finish the movie, stare silently at the screen, and then search for someone who can explain what they just watched. Theroux's performance fit perfectly into Lynch's unsettling Los Angeles dreamscape, demonstrating his ability to play bewilderment, frustration, menace, and vulnerability without ever losing the audience.

His association with Lynch continued when he appeared in Inland Empire in 2006, another film that did not exactly arrive with an instruction manual.

Theroux also ventured into considerably louder territory. In Charlie’s Angels: Full Throttle he played Seamus O'Grady, an Irish criminal with enough swagger, tattoos, and villainous energy to ensure nobody confused him with the romantic lead. Other film appearances followed in productions including Miami Vice, Zoolander, Your Highness, and Wanderlust.

But Theroux wasn't satisfied simply appearing in movies. He wanted to help write them too.

He co-wrote the screenplay for the 2008 comedy Tropic Thunder, directed by Ben Stiller. The film was a gleefully excessive Hollywood satire featuring Stiller, Robert Downey Jr., Jack Black, Nick Nolte, and Tom Cruise, among others. Theroux helped construct a movie about actors making a war movie who accidentally find themselves in an actual dangerous situation—which sounds like the sort of screenplay meeting where somebody eventually said, “Fine, but can we make it even crazier?”

Apparently they could.

Theroux subsequently worked on the screenplay for Iron Man 2, bringing his writing talents into the Marvel Cinematic Universe. He also wrote the screenplay for Zoolander 2 and has continued working behind the scenes as a writer and producer. It is an unusual combination: audiences might see him brooding dramatically in one production without realizing he helped write explosions and jokes for another.

Then, in 2014, Theroux landed the role that would become one of the most acclaimed of his career.

In HBO's The Leftovers, he played Kevin Garvey, a police chief struggling to hold together his family, his community, and occasionally his own grasp on reality following the unexplained disappearance of two percent of the world's population. Created by Damon Lindelof and Tom Perrotta, the series explored grief, faith, loss, love, and the desperate human need to find explanations when none are available.

Theroux's performance was emotionally demanding and frequently devastating. Kevin could be frightened, angry, loving, irrational, determined, and completely lost, sometimes within minutes. The series developed a passionate following and earned widespread critical acclaim during its three-season run. For many viewers, it transformed Theroux from a familiar character actor into one of television's most compelling dramatic leads.

After The Leftovers, he continued choosing projects that were difficult to predict. He appeared in films including The Girl on the Train, The Spy Who Dumped Me, On the Basis of Sex, and Lady and the Tramp, in which he provided the voice of Tramp. Going from existential despair in The Leftovers to voicing a romantic stray dog might seem like an abrupt career turn, but by this stage unpredictability had become practically part of the brand.

Theroux later starred in the television adaptation of The Mosquito Coast, based on the novel written by his uncle Paul Theroux. He played inventor and idealist Allie Fox, a role previously portrayed by Harrison Ford in the 1986 film adaptation. The series added another complicated, obsessive character to Theroux's collection and created the unusual situation of an actor starring in an adaptation of his own uncle's novel. Family gatherings must occasionally become complicated.

More recently, Theroux joined Tim Burton's delightfully macabre universe in Beetlejuice Beetlejuice, the long-awaited sequel to the 1988 film. Playing Rory, he once again demonstrated his willingness to enter strange fictional worlds populated by unusual characters—which, considering his history with David Lynch, probably felt almost conventional.

Theroux's personal life has occasionally generated nearly as many headlines as his professional career. His relationship with Jennifer Aniston attracted enormous media attention, and the two married in 2015 before announcing their separation in 2018. Despite the inevitable tabloid fascination, Theroux generally continued focusing publicly on his work rather than turning his private life into an ongoing production.

Away from movie sets, he has become known for a distinctly New York style involving leather jackets, boots, dark clothing, and motorcycles. Photographs of Theroux riding around Manhattan have become common enough that one occasionally wonders whether he actually owns ordinary transportation. If he has ever been photographed climbing cheerfully aboard a minivan carrying reusable grocery bags, the evidence has been carefully suppressed.

Yet underneath the cool exterior is an actor who has repeatedly taken professional risks. Theroux has never settled comfortably into one category. He can disappear into a David Lynch mystery, anchor an emotionally exhausting HBO drama, write a massive Hollywood comedy, contribute to a superhero blockbuster, voice an animated dog, and then turn up in a Tim Burton movie looking as though this was the plan all along.

That unpredictability has helped give Justin Theroux a career far more interesting than the standard Hollywood trajectory. More than three decades after his first film appearance, audiences still cannot be entirely sure what he'll do next.

And that appears to be exactly how he likes it.

Happy Birthday to Justin Theroux—the actor, writer, producer, occasional Hollywood troublemaker, and perhaps the only man capable of surviving David Lynch, Marvel, The Leftovers, Beetlejuice, and New York traffic while somehow keeping the leather jacket looking immaculate.