I just watched the DS9 episode “Necessary Evil” (S2 E8). A very good episode, I think.
I was watching the first part of Season One a little while ago, and it’s impressive how quickly DS9 found its footing, both in its characters and in the sense of the particular magic of DS9.
The flashback episode is overused in TV, but it was cool to see Odo and Kira back in the day. (Convincing, as well.) Kira looks really good with long hair.