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When word spread that Gossip Girl was going to set an episode at New York’s cultish “immersive theatre” production Sleep No More, fans of the show — who have been known to develop wallet-crippling addictions to it — were not happy. Would their favorite secret spot soon be overrun by teenyboppers keen on re-enacting Serena and Blair’s melodramatic intrigue? Would Gossip Girl give away any of the Macbeth-inspired experience’s secrets? Well, the episode aired last night, and we learned far more about Chuck Bass’s libido (or newfound lack thereof) and Ivy’s ex-boyfriend than Sleep No More. To commemorate this supremely odd moment of convergence, we’ve rounded up some of the best and strangest moments that have found TV shows appropriating cult, underground, and indie culture, from Saved by the Bell‘s rave to Roseanne‘s riot grrrls, after the jump.

Gossip Girl and Sleep No More

As anyone who knows even a little bit about Gossip Girl and Sleep No More could easily anticipate, the series basically used the production’s masks, darkness, and hidden rooms as an excuse to do the same kind of mistaken-identity-masquerade business it does at least once a season, with the added bonus of a few secret encounters. The moral of the story seems to be that Upper East Siders should never participate in any activity that requires a mask — even if it is a benefit — especially when Liz Hurley’s involved. Yes, we saw a bit of the Macbeths bathing in blood and glimpsed a few of Sleep No More‘s many secluded nooks, but fans can rest assured that Gossip Girl didn’t blow the lid off the experience.