Have you ever seen the 1990 American crime movie, the Goodfellas? It's my favorite!
I have not. What is it about? 
It's an adaptation of the book "Wiseguy". It's about the mob.
Is it true to the book?
Goodfellas
Goodfellas (stylized GoodFellas) is a 1990 American crime film directed by Martin Scorsese. It is an adaptation of the 1985 non-fiction book "Wiseguy" by Nicholas Pileggi, who co-wrote the screenplay with Scorsese. The film narrates the rise and fall of mob associate Henry Hill and his friends and family from 1955 to 1980.
Scorsese initially titled the film "Wise Guy" and postponed making it; later, he and Pileggi changed the title to "Goodfellas". To prepare for their roles
of people have asked me about the title of my book. It's part of Negro slang. When you say you want to go to Fat City, it means you want the good life. I got the idea for the title after seeing a photograph of a tenement in an exhibit in San Francisco. 'Fat City' was scrawled in chalk on a wall. The title is ironic: Fat City is a crazy goal no one is ever going to reach." 
Film adaptation.
The novel was adapted