"Donnie Fatso" is the ninth episode in the twenty-second season of the American animated television series The Simpsons. It first aired on the Fox network in the United States on January 2, 2011. The plot revolves around an FBI agent, who helps Homer go undercover to infiltrate Fat Tony's mob. Homer agrees to help the FBI in order to reduce his prison sentence on a bribery conviction. This episode is a reference to Goodfellas as well as real-life FBI agent Donnie Brasco.
"Donnie Fatso" was written by Chris Cluess and directed by Ralph Sosa. Critics were polarized with the episode, with criticism stemming from its main plot and cultural references.
Upon its initial airing, the episode received 7.32 million viewers and attained a 3.2/8 rating in the 18-49 demographic, according to Nielsen ratings. "Donnie Fatso" featured guest appearances from Jon Hamm and Joe Mantegna.
Plot
Homer and Marge wake on New Year's Day with hangovers after the family's New Year's Eve celebration. As Homer takes out the garbage, Chief Wiggum, Eddie, and Lou arrive and issue him multiple citations and fines - the result of recently passed, frivolous laws intended to bring in revenue for the city when broken. Taking Moe's suggestion that he bribe a city official to clear up the fines, Homer leaves a sack full of cash on the official's desk but is promptly arrested, convicted, and sentenced to 10 years in prison. Wiggum takes pity on Homer and tells him to meet with an FBI agent, who offers to reduce the sentence if Homer will go undercover in the prison as Nicholas "Nicky" Blue pants Altosaxophony to investigate Fat Tony, who is also serving time along as his top henchmen.
Homer quickly gains favor with Fat Tony, due to a confrontation engineered by the FBI agent, and Fat Tony breaks him and the entire group out of prison and offers him a chance to join the syndicate. Homer's first task is to burn down Moe's Tavern in revenge for Moe's rudeness toward Fat Tony on the phone, but Homer finds that Moe has already done the deed himself. Fat Tony accepts Homer into the syndicate and the two develop a special bond; however, complications over a scheme to import weapons put the syndicate under severe stress. Eventually Fat Tony discovers Homer's undercover status and, emotionally devastated by his betrayal, dies of a fatal heart attack.
Meanwhile, Marge has begun to panic over being unable to communicate with Homer, as she knows nothing of his undercover work and cannot get any information on his whereabouts. She is surprised and thrilled when he returns home with his prison sentence lifted, but Homer feels guilt for Fat Tony's death and bitterness toward the government over being used to bring him down. Homer visits Fat Tony's grave to apologize, but is kidnapped by his cousin Fit Tony, who plans to kill him for revenge. However, Fit Tony spares his life after Homer tells of the time he and Fat Tony spent together, seeing that Fat Tony lives on in Homer's memories. Fit Tony takes charge of the syndicate, but the stress of the position causes him to overeat and gain weight, eventually becoming indistinguishable from Fat Tony and assuming his name.
Production
Donnie Fatso was written by Chris Cluess and directed by Ralph Sosa. In July 2010, it was announced that Jon Hamm would make a guest appearance in the episode as an agent for the FBI. In his interview with Entertainment Weekly, showrunner Al Jean was pleased with Hamm's performance, opining: "You gave him one note and he immediately did twelve great things with it. He was really funny. And handsome. He had it all. Hamm stated that appearing on the show was "an incredible experience". In his interview with Access Hollywood, he continued, "I got to work on The Simpsons, which I watched for 20 years and the show is still fresh and still funny and the characters still resonate. It’s one of the best shows on television. It was an honor to be asked to be a part of it." Joe Mantegna returned as Fat Tony, and voiced Fat Tony's cousin Fit Tony.