Factual error: Towards the middle of the film,Pacino and Depp are walking downtown, there is alot of traffic and some of the cars are "post 1978" model . One in particular caught my eye, which was a mid-80's Ford Taurus (even the model of the car didn't exist in 1978).

Donnie Brasco (1997)
Plot summary
Directed by: Mike Newell
Starring: Johnny Depp, Al Pacino, Michael Madsen, Anne Heche, Bruno Kirby
The movie is based on a true story that follows FBI agent Joe Pistone (Johnny Depp) as he infiltrates the mafia of New York. Befriending Lefty Ruggiero (Al Pacino), Pistone (under the name Donnie Brasco) is able to embed himself in a mafia faction lead by Sonny Black (Michael Madsen). Ruggiero and Pistone become tight as the group goes about collecting money for 'the bosses'. Eventually, the group become big time when Black himself becomes a boss, all the while Pistone collects evidence. However, the trials and tribulations of the undercover work become more than Pistone can bear. His marriage falls apart and to top it off, the mafia suspect a mole in the organization. The real dilemma is afforded to Pistone, who knows if he walks away from the mafia, Ruggiero will be the one punished.
Sonny Black: You know what we do when we find that rat, right, Lefty?
Lefty: 'Could be I found him already.





Answer: Benjamin "Lefty" Ruggiero suffered from testicular cancer, as well as lung cancer.
Bishop73