I was thinking the other day about Friday Night Lights. It is a very good show, and yet, during Season 2, they had one of the dumbest plots that you could imagine. Luckily, the show quickly resolved it and then pretended like it never happened (which was for the best) and I think it all turned out okay. So that made me think of this, the latest Comic Theme Time! If you don't recall what Comic Theme Time is, it is when I ask you good people to think of as many examples as you can think of that fit the topic (unlike Top Five, where I give you examples that fit the topic).
So the topic/challenge is - name the worst plots you can think of during runs that you thought were very good!