Pamela Fionna Segall (née Segall; born July 9, 1966) is an American actress and voice actress. She is best known for her voice work, in particular as the voice of Bobby Hill on King of the Hill, as well as the title character of Pajama Sam. She is also known for playing Dolores in Grease 2 and for playing Ashley Spinelli on The Animated TV Series Recess. She is also known for her appearances on Californication and Louie, where she is also a consulting producer.