 Albert Brooks (I) (qv) was always Andrew Stanton (qv)s first  choice to voice the part of Marlin. Although Brooks had done several  episodes of _"Simpsons, The" (1989)_ (qv), he found voice work for a  feature length cartoon to be substantially different in that he had  to do it in isolation, and not alongside any other actors. He didnt  particularly enjoy the experience.