I'm looking to see what movies/books I should check out, that are like Godfather and Scarface.

I've seen GF1-3, Scarface, and Goodfella's. Is there any other movies similar to any of these that I'd probably like?

Also, what are some good books? I haven't read any. Is the Godfather Trilogy as books as good as the movies?

Sorry for all the questions, but thanxs for any answers.