THE STYLINGS OF LYLA GARRITY, CHRISTIAN RADIO DJ*: The AV Club has a roundtable discussion about the worst episodes of good shows. I agree with some (see above; see also 30 Rock, live episode). But the first one that came to mind for me was the black market episode of Battlestar Galactica. Should I ever manage to get Spacewoman to watch that show, we'll skip right over that one there.
*Featuring Logan from Gilmore Girls.