ST:DS9, Q-Less, Episode 7
Meh. An alright episode. I get the feeling I've already seen the best Q episode with the TNG finale. It's pretty much all downhill from here.
I really liked Q's interaction with O'Brien: "Oh, weren't you one of the little people?"
Edit: Fine. Because somebody will probably mention.
There were some other good parts as well... Maybe not great, but still important. Sisko punching out Q distanced Sisko's character from Picard's considerably. It was important, if a little... hokey.