A cool article/video if only because it includes some (very justifiable) bits of #Babylon5 in the mix (along with BSG, TNG, and X-Files).
YMMV, of course.
Video: Ars picks ten emotional moments from our favorite sci-fi TV shows
Some truly great character bits from some truly great television episodes.
Aw, no Star Trek (original series)! I still choke up when (SPOILER ALERT!) Kirk stops McCoy from saving Edith Keeler.
+Scott Randel As the author noted, there's zillions of shows possible. From TOS, I'd include both that and the "Forget" finale in "Requiem for Methuselah." Shatner's got some good moments in "The Naked Time" as well ("Never lose you").
Also very happy that's the picture that popped up with the article. Helluva scene.