Major Roles:
* Iron Man (2008-2019): As Tony Stark/Iron Man in the Marvel Cinematic Universe, this is arguably his most iconic role.
* Sherlock Holmes (2009-2011): Played Sherlock Holmes in two films, both critically acclaimed.
* Chaplin (1992): Won a BAFTA Award and received an Oscar nomination for his portrayal of Charlie Chaplin.
* Less Than Zero (1987): One of his earliest breakthrough roles as the troubled teen Julian.
* Natural Born Killers (1994): His role as a murderous psychopath was controversial but showcased his acting range.
* Tropic Thunder (2008): Won a Golden Globe Award for his performance as a method actor who loses his mind.
* Zodiac (2007): Played the role of San Francisco Chronicle cartoonist Paul Avery.
Other Notable Roles:
* U.S. Marshals (1998):
* The Judge (2014):
* Avengers: Endgame (2019):
* Avengers: Infinity War (2018):
* Captain America: Civil War (2016):
* The Avengers (2012):
* Due Date (2010):
* Kiss Kiss Bang Bang (2005):
* The Pick-up Artist (1987):
* Gothika (2003):
* The Shaggy Dog (2006):
Beyond this, Downey Jr. has appeared in many other films, including:
* Short films
* Independent films
* Animated films
To find a complete filmography:
* IMDb: The Internet Movie Database (IMDb) is the most comprehensive online source for film information and includes detailed filmographies for actors like Robert Downey Jr.
* Wikipedia: The Wikipedia page for Robert Downey Jr. also lists his films.
Let me know if you'd like to explore a specific period of his career or if you have a specific type of film in mind.