I saw this movie when I happened to catch it on CBS a few years back. I only saw part of it but I have always liked the subject since I was eight years old. I recently bought a copy and it has become one of my favorite films. The acting is good and they really did a magnificent job on casting, costumes, and locations. I thought Turturro's role was fantastic and Sizemore didn't do badly either though I think Assante was more realistic in Gotti. I would have liked to have seen Turturro as Gravano in Gotti it would have been a real treat to see him and Armand square off. This movie captures the backstabbing, badmouthing, lying, rip offs, and betrayal that goes on in the mob families just like Donnie Brasco did the only difference being that this was no "crazy messed up love story" as Depp put it. This is a movie that bluntly depicts the merciless killing of so called friends and the treacherous deceit that follows without any hint of feelings or "real" friendship as he would have you believe. Turturro's Gravano is a detached and pitiless killer who is as bad as the people he whacks and his rise like Gotti's is as meteoric as his fall. This film leaves you asking Gravano this question: If you killed cheaters, double crossers, dope heads, and people who broke the rules shouldn't you have been killed too? Witness to the mob gives you both sides of the story and lets you make the call.