Sissy Spacek is an American actress who has been in the entertainment industry since the 1970s. She is best known for her roles in films such as Carrie, Coal Miner's Daughter, and The Help. She won an Academy Award for Best Actress for her performance in Coal Miner's Daughter. Spacek has also been nominated for several other awards, including Golden Globe Awards and Emmy Awards. She is considered one of the most influential actresses of her generation.