Battlestar Galactica 
3x07 A Measure of Salvation
It's been nearly 18 months since I last watched Galactica -- oops, that wasn't meant to happen! I tried reading the episode summary at that link to remind me where I was, but it didn't really help, so instead just settled down to watch the episode and hope the "previously on"s would do the trick. And thank frak for those, they did. Shame I didn't manage one more episode before my accidental abandonment, though, because that really wrapped up the ongoing stories (for the time being, anyway) before apparently moving on to more episodic tales with Hero.