Likewise, while I haven't seen him yet, I hear Rexxar, the questgiver in the Horde Onyxia quest chain who used to be in Desolace, now resides at a settlement in Blade's Edge Mountains. Maybe I just don't know how much WoW has affected me, but seeing Hemet in Nagrand was like seeing an old friend, and I know when I see Rexxar I'll have to give him a /nod or even a /wave as well.
And the self-referential stuff goes back even farther than WoW's Azeroth-- the Unyielding Vengeful Knights and Footmen in the Expedition Armory in Hellfire Peninsula are right out of Warcraft II, and the first time I went to Shattrath to do the little tour quest, I was too agog at the scenery to realize the questgiver I was clicking through was none other than Khadgar-- THE Khadgar! As in, the one standing with the rest of the statues in Stormwind!
I love Blizzard's references to pop culture and the real world. And yes, it's nerdy, but I think that I love their self-referential lore stuff even more-- it's awesome to see the story of these characters play out before our eyes. Seen any other familiar faces in Outland yet?