^ I think SaGN was their penultimate episode, their swansong being Someone To Watch Over Me. Memorable episode, for various reasons. Hadn't actually realised before you'd mentioned it that they'd written SaGN. Got to give them credit for that, I guess.
You're right. For some reason, my eye just saw those two "S" episodes as being the same when I skimmed IMDB, but they're not.
Looking at IMDB again, it looks as if Thompson and Weddle were supervising producers (and writers) for the fourth season of Battlestar Galactica
and the ninth season of CSI