To date, five people (and two honorable mentions) have won Oscars for acting and something else:
- Laurence Olivier: Producer of Hamlet (Best Picture, 1948); Best Actor for the same film.
- Barbra Streisand: Best Actress, Funny Girl (1968); Best Song, A Star is Born (1977).
- Michael Douglas: Producer of One Flew Over the Cuckoo’s Nest (Best Picture, 1975); Best Actor, Wall Street (1987).
- Emma Thompson: Best Actress, Howards End (1992); Best Adapted Screenplay, Sense and Sensibility (1995).
- George Clooney: Best Supporting Actor, Syriana (2005); Producer of Argo (Best Picture, 2012).
The honorable mentions are:
- Harold Russell, who won Best Supporting Actor and an honorary Oscar for his performance in The Best Years of Our Lives (1946).
- Roberto Benigni, who won Best Actor for Life is Beautiful (1998), and who, as the film’s director, accepted the award for Best Foreign Language Film on its behalf (technically an award for the country, not any individual filmmaker).