I once had to take a complainant to talk to the detectives. While we are sitting in the squad room the complainant, a real Brooklyn hipster type, was clearing uncomfortable being around all these cops and tries to make small talk. He says to none of us in particular, kind of asking the room, what is the most realistic cop show. Without even hestitating two detectives simultaneously yell out "Barney Miller!!!". Mr. Skinny Jeans was dumbfounded but they were right.
I vote for Jimmy McNulty from The Wire.