Siouxsie and the Banshees:
- My favorite Easter Egg-- there is a NPC in Acherus named Siouxsie the Banshee, which is the most obvious reference possible. This of course was added in the Wrath of the Lich King expansion.
- There is also a NPC named Tsu'zee in Dire Maul. She is flanked by two banshees. This is a much older reference, it's not nearly as blatant but it does get the point across.
- There is a quest in Silverpine Forest called "Cities in Dust" which references the Siouxsie and the Banshees song.
- There is a NPC named Emil Autumn in the Howling Fjord, he is an enchanting trainer, which could be a reference to her album, Enchant.
- There is a NPC in Undercity named Royal Overseer Bauhaus (of the Undercity Census Bureau) which may be named after the band. It could also be a reference to the German Staatliches Bauhaus school of architecture and art, so I put it in tentatively. However, when I first saw it I thought of the band, so I'm still putting it into my list.
- In Kun-Lai Summit there is a tuskarr named Wally and a hozen named Tic Tak the Carpenter. When you talk to Wally he says "The time has come, my little friend, to talk of other things" this is obviously a reference to the walrus and the carpenter.
- On top of a mushroom in Zangermarsh is a hookah and a skeleton, I'm not sure why the skeleton is there, but the hookah is a reference to the caterpillar.
- The NPC guild master in Undercity is named Christopher Drakul, which is possibly a reference to Christopher Lee and his role as Dracula. It wouldn't be a stretch, WoW likes to mix character names and actors names together, for example, there is a character named Harrison Jones, who has a quest line that is basically an Indiana Jones movie.
- There is a traveling salesman who wanders around Elwynn Forest and Darkshire named Antonio Perelli, which references the hair elixir salesman in Sweeney Todd the musical.
- The goblin who runs the barber in Stormwind was originally named "Sween Neetod." His name is now Jelinek Sharpshear, but you can still see skeletons under a floorboard on the second story of the shop, right under a shaving razor.