I agree pretty strongly with the above re: Supernatural. IMO, S2 was by far the strongest (of what I saw); S3 made me angry with the extra-rampant casual misogyny in the dialogue (even more of a shame than usual, because it had interesting female characters), and then I broke up with the show abruptly mid-S5 after it did something that made me too angry to continue. (It was a really well-written episode, too, IIRC--and beautifully performed by the cast. If the show had given me any reason to TRUST it, I might not have fled screaming.)