Mare Winningham is an American actress who has been active in the entertainment industry since the late 1970s. She has won numerous awards for her work, including an Emmy Award and two Golden Globe nominations. She is best known for her roles in films such as St. Elmo's Fire, Georgia, and Turner & Hooch. Her television credits include ER, Grey's Anatomy, and Brothers & Sisters. She has also appeared on Broadway in productions such as The Best Little Whorehouse in Texas and The Glass Menagerie.