Actress Nancy Cartwright is best known for a role for which she never appeared on camera. As Bart Simpson on the Fox animated comedy "The Simpsons" (1990- ) and before that in shorts on "The Tracey Ullman Show" (Fox, 1987-90), her work was well known, although as a voice actor she was largely unrecognized in person. From childhood, Cartwright realized she had unusual vocal talents, and after a job at an Ohio radio station afforded her an opportunity to use her skills and get them noticed, it was advised that she get involved in animation. One of the contacts recommended to her was the