Weird Science
Robert Downey Jr. plays Ian, one of the jerky popular guys out to make nerds Gary (Anthony Michael Hall) and Wyatt's (Ilan Mitchell-Smith) lives terrible.
Things change however when the nerds makes a hot woman who teaches them how to be popular, look good and no longer be zeros.
Saturday Night Live
At just 20 years old, Downey joined the iconic sketch series for a short stint of one season.
While his tenure at Studio 8H was short, he did get to return when he hosted the show in 1996.
The Pick-Up Artist
In this 1987 comedy, womanizer Jack Jerico (Downey) falls for Randy Jensen (Molly Ringwald), only to learn that his perfect match is in debt to the mafia.
Less Than Zero
In this 1987 drama, Downey plays Julian, a drug addict whose startup record company takes a turn for the worst in Los Angeles.
He tries to hide it but when his best friend returns from college, he has to own up to his issues.
Johnny Be Good
The 1988 comedy revolves around the college recruitment process for high school football players, one of which is played by Downey.
Air America
Downey co-stars alongside Mel Gibson as a LA radio station helicopter traffic pilot whose license is revoked.
With no job on the horizon, Billy (Downey) is recruited to the CIA's private airline during the Vietnam War to fly into some pretty intense and illegal situations.
Soapdish
David Barnes (Downey) is a producer of a daytime drama, which stars Sally Field's Celeste Talbert in this comedy.
As Celeste's life begins to fall apart, her on-screen enemy bands together with David to try and ruin her career but it doesn't exactly go the way they plan.
Chaplin
Downey is Charlie Chaplin in this 1992 film about the iconic silent film star himself.
For this role Downey ended up winning Best Actor at the BAFTA Awards and was nominated for Best Actor at the Academy Awards.
Wonder Boys
In this 2000 comedy-drama, Downey co-stars with Michael Douglas, Tobey Maguire and Katie Holmes, playing the role of a book editor.
Ally McBeal
In 2004, Downey joined the cast of Ally McBeal as Ally's sweet, dreamy boyfriend Larry.
Throughout season four of the show the two fell in love and fans couldn't get enough. Sadly, he didn't appear in the season four finale or the fifth and final season.
Kiss Kiss Bang Bang
In this 2005 dark comedy, Downey plays Harry Lockhart, a thief who stumbles upon an acting auditions while evading the cops.
His emotional breakdown convinces casting he's a method actor perfect for the part, and he is hilariously set up with a real private investigator (Val Kilmer) to shadow him to learn the part.
However, total chaos ensues, including chopped off fingers and a staggering body count.
Good Night, and Good Luck
The New York City native plays reporter Joseph Wershba in the 2005 black-and-white historical drama about broadcast journalist Edward R. Murrow when he set out to bring down Senator Joseph McCarthy.
Zodiac
Co-starring with Jake Gyllenhaal and Mark Ruffalo, Downey plays the part of Paul Avery, a journalist for the San Francisco Chronicle assigned to the Zodiac case back in the late 1960s and early 1970s.
Iron Man
In 2008, Downey put on the Iron Man suit for the first time playing Tony Stark AKA Iron Man, a genius inventor and playboy who becomes a superhero.
Tropic Thunder
Downey acts as Kirk Lazarus, an Australian method actor, in this 2008 action comedy, which shows a group of actors who find themselves forced to become the soldiers they are portraying on screen.
The film also stars Ben Stiller and Jack Black.
The Soloist
Steve Lopez (Downey), a journalist working for the Los Angeles Times, discovers a homeless Julliard alum named Nathaniel Ayers (Jamie Foxx) and tries to help him improve his life.
Sherlock Holmes
Downey stars as private detective Sherlock Holmes in this 2009 crime film. In the movie, Sherlock Holmes and his partner Watson (Jude Law) must use their wits and strengths to stop a bad guy who is threatening to destroy all of England.
Iron Man 2
In the second hit film of the superhero franchise, Downey along with Gwyneth Paltrow, Scarlett Johansson and Samuel L. Jackson must keep the world safe while dealing with his identity being revealed and his health on the decline.
Due Date
The actor plays the part of Peter Highman, a successful architect who gets stuck on a road trip with an aspiring actor named Ethan Tremblay (Zach Galifianakis) in order to make it home before his wife gives birth.
Sherlock Holmes: A Game of Shadows
Sherlock (Downey) and Watson (Law) reunited in 2011 to hunt down and stop Professor Moriarty (Jared Harris), who decided to commit random crimes all over Europe.
The Avengers
In 2012, Downey played Iron Man in this whopping $1.5 billion-grossing hit, which was the first film to show the Earth's mightiest heroes coming together to fight as one to stop Loki (Tom Hiddleston) from enslaving all of humanity.
Iron Man 3
In 2013, Downey reprised his role as both Tony Stark and Iron Man. This time his character's world is torn apart by Mandarin (Ben Kingsley), so he must start over and go into rebuild mode to get back to normal.
The Judge
Hank Palmer (Downey), a big-city lawyer, returns home to help his father, the town's judge, who is suspected of murder. Along the way he reconnects with his estranged family and puts his smarts to good work.
Avengers: Age of Ultron
Grossing $1.4 billion worldwide, the 2015 Avengers sequel again featured an all-star cast, including Chris Hemsworth and Chris Evans, with Downey starring as Iron Man.
This time around the team of superheroes attempt to start a peacekeeping program called Ultron, but after things go awry they must instead work together to stop the villain Ultron (James Spader) from putting his plan into action.