Donnie Brasco/YMMV

• Alas, Poor Villain: You can't help but feel sorry for Lefty, a low-level mobster who struggled for thirty years for something, anything only to be constantly shoved aside by the higher-ups -- and ultimately betrayed by the one guy who sympathizes with him.
  • Though his rejection of his last chance does a good job of making the audience feel sorry for him, while also seeing this was HIS choice and he could have long ago chosen a different life.
• Misaimed Fandom: The book Gomorrah mentions that Donnie Brasco is a popular movie amongst the Camorrista (the Naples mafia), as Donnie turns away from the FBI and becomes a gangster in his heart.