I'm torn between whether to recommend watching all of Endless 8 to someone watching Haruhi Suzimiya for the first time or just maybe I,II,III,VIII. You need I and II to establish the premise, III (or possibly a random one of IV-VII) for the building sense deja vu and the growing number of repetitions Nagato recites, then, of course, VIII for the conclusion, but more seems potentially alienating besides being unnecessary to "get" it.
#anime