detective john munch played on two different television series over 21 seasons made guest appearancesd belzer introduced detective munch in 1993. detective munch the longest running character in the history of primetime television. all that came to an end last night when "law & order svu fans" fans watched detective munch's final season. >> you had one hell of a run, detective munch. >> did i? i don't know where it all went. >> thank you. >> i'm pulling them now. i'm looking at them now. detective munch. [ phone rings ] >> homicide. i mean svu. hold on. i'll get you a detective. >> joining me now, my buddy, richard belzer, richard, i cannot imagine what it was like that day on the set, to have your final wrap, final scene. >> much more emotional. at the risk of being immodest, the thousand of fan mail i get from twitter and whatever, those other services are, has been so moving and so usually people will write. you are a jerk, or something, you know but there is hundreds and hundreds of people just saying they're going to cry they're going to drink they're going, don't know what they'