I asked myself that question when it finished also. I thought the series was raw, the best prison drama I've ever seen. But to be honest, the last series sucked major ass with the fucking singing portions and the whole concept of that guy's spirit visiting those dudes responsible for putting him in the hospital all burned and shit.

The thing I liked most about the show though was the brutal realism it portrayed, it didn't sugarcoat anything. Although some things I never quite understood, like why that one bald nazi guy.. the second in command like guy decided to slice his fucking gums off with a razor blade.