Even with a show as good as Supernatural, every once in awhile there comes an episode that is absolutely horrible. A lot of fans pan Red Sky at Morning for being the series' worst (even Kripke hasn't been too kind on himself over it)but my personal favorite-worst has to be Season Four's Family Remains.
With that in mind, what is your personalworst episode? It can be from any season or you can pick one from every season. You can even pick ones that, while not extremely bad, just weren't up to the usual Supernatural standards. Enjoy.