Nancy Jean Cartwright is an American actress, voice actress, producer, and author best known for her work in animation. She achieved worldwide recognition as the voice of Bart Simpson in The Simpsons, a role that has earned her a Primetime Emmy Award and an Annie Award, while also voicing numerous other characters in the series. Her extensive voice acting career includes productions such as Rugrats, Animaniacs, Kim Possible, and Pound Puppies, as well as the segment "It's a Good Life" in Twilight Zone: The Movie. Widely regarded as one of the most accomplished voice performers in the industry, Cartwright has made a lasting contribution to animated film and television.