"American Me" was a very good, and realistic prison movie ephasizing on the hispanic gangs.
I felt that "Lock Up" with Sylvester Stallone (ahh TIS )was another great prison movie, as well as "Shawshank Redemption".
I haven't seen "The Green Mile" yet, but I plan on it.
"He who fights with monsters should look at it that he himself does not become a monster... when you gaze long into the abyss the abyss also gazes into you..."