The person upon whom the Donnie Brasco movie was based, (Joe Pistone), was a close friend and associate of one of the agents in my squad. In fact, he had a small part in the movie.
(The scenes when they first flew down to South Florida to check out the night club. He was one of the big guys providing "muscle".)
As to the "Goodfellas" connections:
I sat in on the Boston College point shaving trial in the early 80's in the federal courthouse on Tillary St. in Brooklyn. Henry Hill, (Ray Liotta's character), was a government witness against Jimmy "The Gent" Burke, who was the character played by Robert De Niro in the movie.
My brother-in-law was a former bartender in the bar (then called "Robert's Lounge" on Lefferts Blvd) where "Spider" was shot. (Some of the bodies were buried under the floor / slab.)
My wife used to go to school with and play at the home of the daughter of Vito "Tuddy" Vario, the brother of the character played by Paul Sorvino. "Tuddy" ran the cab stand and pizzeria portrayed in the movie.
And, of course, we all used to enjoy eating at Don Peppe's restaurant.
Ah, the good old days...when I had to be concerned about being filmed and explaining why I was in the company of wiseguys coming out of family weddings and other social events.