Archaic Binary

Browsing around the forums, came across this post (which these quotes are from): http://forums.worldofwarcraft.com/thread.html?topicId=25968837903&sid=1&pageNo=1

I will post the ones I know are true, and have tested myself.

• Room above “The Threads of Fate” gnome will polish your shoes (hooves) for free:
  
• “In Area 51 if you stand by the rocket long enough, a test pilot will come up and recite the lyrics to Elton John’s song Rocket Man.”

• “Just outside of Goldshire there is a house on Crystal Lake with some skinning trainer and trade supplies women in the lower level. If you go up stairs you will notice the music change into some creepy type of song. Additionally there are sometimes five children there who now stand in the shape of an hour glass, but used to stand in the shape of a pentagram. If you go into the house around 7:40ish a.m. server time and wait five minutes you will hear either a banshee scream, or a voice clip that says “You will die.” The voice clip is actually from C’thun, an old raid boss. I believe the sound clips play at 7:45, but I can’t recall. I have done this and heard the voice though.”

• “During the daily Get Kraken! quest, if you manage to kill the Kraken you’ll receive a Kraken Tooth, which starts another daily quest.” You may want to bring a friend in the party to help with this one.

• “Not so much an easter egg, but many people aren’t aware of the human mount that’s only sold in Menethil, a level 20 black stallion.”

• “When I found out about the Nagrand Nursery, up there in the northern Nagrand mountains.” This is just north of Laughing Skull Ruins.

• “When using the [Wormhole Generator: Northrend] once in a blue moon you will get the option “Underground”. It sticks you in a drain pipe under the horde side of Dalaran, and inside is a vendor who sells engineering schematics, but only to the first person in there each day.”

• “If you equip the Eye of Divinity (a 60 raid priest quest item) then you can see the ghost of Ricole Nichie making rude faces and gestures at Haris Pilton in Shattrath City.” Since this is Priest only, it should also work when you have the Detect Invisibility buff on you.

• “Not a Easter Egg but also not well known by many players.
  Players from both factions can speak to NPCs at Blue Sky Logging Grounds to ride a log downstream to Venture Bay.”

• “The naga cave on the Isle of Dread off Feathermoon Stronghold in Feralas has a secret chamber with a rare (I believe) naga named Princess Szalla. The chamber can be accessed from the pool at the back of the cave.”

• “Southwest of Honor Hold, where the void walkers hang out, there is a wall. Stay to the west of the wall, and check out the very edges. There is a small indention almost hidden next to a rock. In there is a small skeleton along with a clickable Jar of Ashes.”

• “In the hills behind Moonbrook, there’s a dwarf who gives you a quest that takes you all over the damn place, the final step giving you a neat little trinket that allows fire breathing.”

• “If you go just below this dwarf in the water, you’ll find a Dwarven corpse crushed by some of the bridge underwater. You won’t see a ! above it, but if you right click on the scroll in his hand, it will send you on a very cool quest line. It’s actually a reference to a letter written by a Civil War soldier and is very very cool. I recommend every Alliance character try and do this chain.”

• “You can do all sorts of Emotes to the Gnome Diver in the Dalaran pet shop.
  However, he’ll only blush if a female gnome either flirts or blows a kiss. Everyone else he’ll laugh at.”

• “If you dance with the ghosts in Stratholme they dance back.”

• “Cro in the Lower City of Shattrath sells an apple you can smash.”

• “In old hillsbrad there’s a vendor that sells the starting gear every class comes with.”