The very first episode
Just saw it tonight (on MeTV), probably for the first time ever-- most likely I hadn't tuned in for the original NBC airing, as I was only seven at the time. What a trip, man. Watching that first show was like hearing the early demo tapes of a rock band after spending years listening to five or six albums they've already released.
Anyway, one thing struck me as odd. In some scenes in the patrol car, Reed's and Malloy's voices were weirdly high-pitched. At first I thought it was just bad miking, but no, they actually sounded as if the audio was sped up. Anyone else notice that?