The writers finally remembered that Lucifer woke up Capital-D Death in, oh, November, and comes after residents of Bobby's South Dakota home town in last night's entry, "Dead Men Don't Wear Plaid." While initially lacking in the spectacular gore that made "My Bloody Valentine" so awesome (yes, awesome, even if it did make me mad), "Dead Men" was a Badass Bobby-centric episode, and who can argue against Jim Beaver?
See, Death has decided to wake up a bunch of corpses from the local cemetery, including Bobby's dead wife Karen (Carrie Anne Fleming and not Elizabeth Marleau from season three's "Dream a Little Dream of Me"), only they're more alive-again, Pushing Daisies-style, than the flesh-eating monsters we usually associate with rising from the grave. Actually, they go Daisies one better: the people, like Bobby's cremated wife, are completely restored. Of course, it takes our brainless* heroes forever to figure out what's up with Bobby, even after Dean suspects that Bobby has cleaned. Dudes, just look at Bobby's head: beard trimmed, trucker hat removed, hair parted and neatly combed. Something is just plain wrong with that picture.
*As always, Dean and Sam are exactly as smart or a dumb as the episode needs them to be. It's consistently inconsistent.