DS9: Past Prologue.
Just some observances - Bashir's reaction when he is first confronted by "plain, simple Garak" is priceless! And then, when he's rushing from person to person in ops as he tries to convince them that Garak's a spy!
Presumably, the wormhole's significance with Bajoran religion hasn't filtered down yet, as Kira consistently calls it "the wormhole" rather than the more usual (in later episodes/seasons) Celestial Temple.
Klingon's really are strong - B'Etor womanhandles 15 kg of gold like it's a half-filled handbag.