dude, context matters. i don't know about you, but when Best of Both Worlds aired back in 1990 (yes kids: 19 years ago!!!!), it was the very first cliff-hanger i had ever seen. i'd wager that's true of many people on this board.
and what a cliff-hanger it was. "Mr. Worf, fire."
fuck.
Z'ha'dum aired 6 years later. that's a looong time in tv-years. granted it may have technically been a better episode, but it was evolutionary. BoBW was revolutionary!
Umm, Doctor Who, the classics, used cliffhnager in every episode except the final episode of a story, since 1963.
BobW was hardly revolutionary, just another evolution![]()

"Umm"... as Jammer has said:
At the time, the ending cliffhanger was nothing short of a total coup. Season-ending cliffhangers were rare compared to today (where they are now frequently perfunctory and obligatory; we can thank the success of this episode). The cut to black in this episode prompted double-take whiplash. "Mr. Worf -- fire." That's how the season ends? It was such a shock that the line to this day is still my benchmark for all cliffhangers. (As in, "That season-ender was no Mr.-Worf-fire.")