The Simpsons' Louie acts a lot like Frank Sivero's character does in Goodfellas—and Sivero is filing a lawsuit against The Simpsons. In the lawsuit, filed Tuesday and obtained by Deadline, Sivero claims that he and some Simpsons writers lived next door to each other when Sivero was preparing for his role in Goodfellas, which came out in 1990. In 1991, The Simpsons debuted the character of Louie, a member of the Springfield mob who resembles Sivero in both looks and mannerisms. Louie has appeared in multiple episodes since then. The lawsuit acknowledges that "over the years, The Simpsons were known...