While discussing some of the quests coming up in patch 3.3, we'd made a joke referencing the Knights who say "Ni!" from Monty Python's Holy Grail. Our own Matt Low mentioned that he didn't get whatever inside joke we were making. Much to our dismay, he had never seen the movie or any Monty Python for that matter. Strange women lying in ponds distributing swords for daily quests wouldn't get a chuckle from him. Terry Palin in Elwynn Forest quoting the lumberjack song is also lost on him. He wouldn't even be that concerned about eating the Crunchy Frog available from Darkmoon Faire because he wouldn't know that it contained crunchy, raw, unboned, real, dead frog instead of an almond whirl.
With the vast number of pop culture references scattered in World of Warcraft, it's sad when any are lost on its players. What obscure references have you found in the game that you've enjoyed or other people have completely missed?