Flagg may be my favorite character on the show. So many great lines. The first three seasons have always been my favorite, but the few after that were good too. I agree that when the conflict between the characters diminished so did the quality of the show. The later seasons I watched out of habit, really. It just became dull at that point. So I'd argue it's three shows: the early years, the period after Potter took over and before Frank left, and the last five or so. BJ was never a very interesting character, and seemed such a personality taken right from the 70s that he never rang true. The mustache killed it.