I never really hated any episode of "Buffy," but the one that I always thought should have had a sequel revealing that it was a total hoax and a plot by a jealous boyfriend was "As You Were." There were so many things in that plot that just screamed "conspiracy," and "set up" that every time I watch it I start looking for the second rifleman on the grassy knoll. There are just too many coincidences and inconsistencies in that episode for it to possibly be real. (I know, none of the entire series was real, but you know what I mean...)
i read a really well written article about that ep somewhere explaining how it was a conspiracy, or set-up, or something weird. It was really convincing and you have to imediatley re-watch it after reading the article, it all makes so much sense.
i wish i could find it somewhere.