The Walking Dead, "Thank You"
Season 6, Episode 3
Yes, the final moment, in which Glenn appears to be torn apart by walkers, turned out to be a con on the audience that soured the rest of the season. But otherwise, this episode hits on all of The Walking Dead's main draws: plenty of action, gruesome zombies, end-of-the-world emotional turmoil and a shocking death. (Well, "death.") We might have qualms with how the story played out, but there's no denying this was the most talked about episode of television all year.