- Lived in a Mendocino, CA, hippie commune as a child with seven other families.
- Parents are co-editors of the 1982 book Shaman Woman, Mainline Lady: Women's Writings on the Drug Experience.
- Says her hair is naturally blonde, but has been dyeing it brunette since the age of 12.
- Was signed to play Michael Corleone's daughter in 1990's The Godfather, Part III, but an illness forced her to give up the role. Director Francis Ford Coppola's daughter, Sofia, replaced her.
- Lampooned her 2001 shoplifting arrest when she hosted Saturday Night Live in May 2002.
- After a short break from acting, returned to big-budget films with her role as Spock's mother in 2009's Star Trek.
- Said that she could relate to her role as an aging ballerina in 2010's Black Swan since she's no longer cast as an ingenue.
- 2015, Critics' Choice Awards — Best Supporting Actress in a Movie Made for Television or Limited Series: Nominee
- 1994, BAFTA Film Awards — Best Actress in a Supporting Role: Nominee
- 1994, Oscar — Best Performance by an Actress in a Leading Role: Nominee
- 1991, Golden Globe — Best Performance by an Actress in a Supporting Role in a Motion Picture: Nominee
- 1994, Golden Globe — Best Performance by an Actress in a Supporting Role in a Motion Picture: Winner
- 1993, Oscar — Best Performance by an Actress in a Supporting Role: Nominee
- 1990, Independent Spirit Awards — Best Female Lead: Nominee
- 1995, Screen Actors Guild Awards — Outstanding Performance by a Cast in a Motion Picture: Nominee
- 2010, Screen Actors Guild Awards — Outstanding Performance by a Female Actor in a Television Movie or Miniseries: Nominee
- 2010, Screen Actors Guild Awards — Outstanding Performance by a Cast in a Motion Picture: Nominee
- Christian Slater — Ex-significant Other
- Johnny Depp — Ex-fiancé
- Jubal Palmer — Half Brother
- Sunyata Palmer — Half Sister
- Matt Damon — Ex-significant Other
- Michael Horowitz — Father
- Blake Sennett — Ex-significant Other
- Timothy Leary — Godparent
- Cynthia Istas Horowitz — Mother
- David Pirner — Ex-significant Other
- Uri Horowitz — Brother
- Birth Name: Winona Laura Horowitz
- Birth Place: Winona, MN
- Profession: Actor, Producer
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