Robert John Downey, Jr. is an American actor who made his screen debut at the age of five, appearing in his father's film Pound. He has appeared in roles associated with the Brat Pack, such as Less Than Zero and Weird Science. Other films he has starred in include Air America, Soapdish, and Natural Born Killers. He starred as the title character in the 1992 film Chaplin, earning him a nomination for the Academy Award for Best Actor.
After being released from the California Substance Abuse Treatment Facility and State Prison in 2000 for drug charges, Downey joined the cast of the TV series Ally McBeal playing Calista Flockhart's love interest. His performance was praised and he received a Golden Globe Award for Best Performance by an Actor in a Supporting Role in a Series, Miniseries, or Television Film. His character was written out when Downey was fired after two drug arrests in late 2000 and early 2001. After one last stay in a court-ordered drug treatment program, Downey finally achieved sobriety.
His more recent films include The Singing Detective, Kiss Kiss Bang Bang, A Scanner Darkly, Gothika, Zodiac and Tropic Thunder. In 2008, Downey played the role of Marvel superhero Tony Stark / Iron Man in the live action film Iron Man. He reprised the role in Iron Man 2 and The Avengers, and will do so again in Iron Man 3, set to release in 2013. In 2009, he played the title character in Guy Ritchie's Sherlock Holmes and again in 2011's Sherlock Holmes: A Game of Shadows.