RATINGS: Cast & Crew

DOB: September 14, 1960

Background: Leo was born in New York City, the daughter of a teacher and the editor of Grove Press. She was raised on the lower East side of Manhattan and spent summers at her father's house in East Hampton.

Filmography: She began her acting career with a role on the ABC soap opera "All My Children." After some small parts in independent films and the TV movie "Silent Witness," she became a cast member on the drama series "The Young Riders" for its one season. Her breakthrough television role came in 1993 on the NBC drama series "Homicide: Life on the Street," on which she co-starred for five seasons. Her film career has included "21 Grams," "Hide and Seek," "Runaway," "The Three Burials of Melquiades Estrada," "American Gun," "Midnight Son," "Black Irish," "Righteous Kill," "Everybody's Fine," "Welcome to the Rileys," and "The Space Between." She received her first Oscar nomination for the 2008 independent film "Frozen River," directed by Courtney Hunt. Leo then went on to win an Oscar, SAG Award, and Golden Globe Award for the 2010 film "The Fighter," starring Mark Wahlberg and directed by David O. Russell. She has returned to more television work as well with a leading role on the HBO drama series "Treme" and earned an Emmy Award nomination for her supporting role on "Mildred Pierce," starring Kate Winslet and directed by Todd Haynes.
 

Academy Awards: Win - Best Supporting Actress ("The Fighter," 2011)

Best Actress Nomination
"Frozen River" (2009); lost to Kate Winslet ("The Reader")

Emmy Awards:

Best TV Movie/Miniseries Supporting Actress Nomination
"Mildred Pierce" (2011); lost to Maggie Smith ("Downton Abbey")

Golden Globes: Win - Best Film Supporting Actress ("The Fighter," 2011)

SAG Awards: Win - Best Film Supporting Actress ("The Fighter," 2011)

Best Film Ensemble Nomination
"The Fighter" (2011); lost to "The King's Speech"

Best Film Actress Nomination
"Frozer River" (2009); lost to Meryl Streep ("Doubt")