All's Well That Ends Well
I love how in most of these old EC stories, you can pretty much tell exactly what happened from reading the last panel. When they don't just outright repeat the entire story, there's always an alien or psychopathic killer ready to beat you over the head with whatever moral or suprise plot twist you might not have seen coming from a mile away.
"Oh no! You mean the delicious stew we've been eating is made from the chopped up remains of that hobo I murdered and stuffed in the freezer two pages ago?!! Dear God!!
"Had the small-minded Earthlings realized that the flesh devouring tentacle-monsters were in fact a peaceful race, World War III would never have happened."
Y'know, that sort of thing. Anyway, here are some of my favorite EC endings.