I remember the old Orgrimmar, it was messy, but you would grow to love it, every nook and every place.
I remember the undead event before WoTLK, zombies in Crossroads, so much fun.
I remember exploring good old places or bugged places or places we were not meant to see:
http://i.imgur.com/MMLBR.png
I remember good old Cairne:
http://i.imgur.com/qvi07.jpg
I remember Orgrimmar as it used to be:
http://i.imgur.com/mDBzI.jpg
Nostalgia.....*Sniff*
Anybody remember the abandoned Tauren village btw? East of Silithus, you had to swim for ages.
Or jumping off the bridge which connected Arathi and Wetlands, then swimming to a abandoned house, Newman's Landing.
They added goblin guards there now.