I just want to make a page about secrets and easter eggs in Borderlands 2 new DLC: Tiny Tina's Assault on Dragon Keep. If you know any just post it here so others can look!
This is the ones i know about and if i find more i will post it here!

NB! Nr 3 on the list is still unsolved! If someone knows what this is please tell me! Lots of people want to know what this button can do!!!!

1. When you have killed all the ancient dragons you will enter a room with chest who will become mimics! If you kill all of them a giant golem and a giant mimic will fight where the dise chests are. In the background.

2. When you are on your way to the top of dragons keep to rescue the queen you will see a table with a dead body on it. There is a wheel on the jacobs gas tank behind it and if you use that you will head a dark voice saying that you have to sacrifice something. That means that you have to drop weapons, shields, classmods or relics on the table, and the voice will say something! You can get money, eridium, rare weapons, legendary weapons and fight badasses and enemies!

3. If you go to the Immortal woods and look north at the map you will se this small way. If you go there you will se two chairs. And it will say examine on both of them. If you are playing alone you have to do it quick and then a table with a button shows up. If you press the button.... what happends???? Some says it is a reference to zach galifianakis youtube show, "between two ferns". But i dont know. If someone else knows what this is, please tell me!

Update!!!
Confirmed and not confirmed:
Two bushes spawns when you press the button (confirmed)
Reference to the youtube show "Between Two Ferns" (not confirmed)
Spawns a secret boss (not confirmed)
Has something to do with the Mysterious Amulet (not confirmed)


4. If you go to Hatred`s Shadow you will see this enemy called the darkness in a wall. And if you just shoot it it will disappear and a door will be there. If you look trough the door you will se a red dice chest but the door will be locked! To open this door you need the magic missile. Just throw it at the darkness and it will disappear and the door will open itself!

5. When you do the The Claptrap's Apprentice mission you will meet claptrap on a bridge. He will say "You! Shall! Not! Pass!"who is a Lord of the Rings reference.

6. If you do the side quest Magic Slaughter round 1-5 you will unlock the Magic Slaughter Badasses everywhere round 6! There will be 6 rounds and in round 5-6 you will meet Warlord Slog. If you just jump ouround for a few minutes he will evolve into The King of Orcs! He can also drop the new legendary "Ogre"!

7. If you go to the Unassuming Docks of Potentially Little Importance walk to the right or left. To the beach! Here you will meet a Golem. When you fight against it dont kill it. Just shoot his core when he open his chest to fire something at you. When you destroy his core he will evolve into Unbound Golem. And now the easy part! Just let him kill enemies every time he evolve. Evolving progress is Golems into Unbound Golem, Reckless Rock Golem, Nasty Rock Golem, Imposing Rock Golem and finally Rock GOD! Who will be LVL 72!! And if you go to the dwarven mine you can level up a Iron Golem to LVL 73!

8. This is not a really secret but for people who dont know this after you complete the game, Butt Stallion will be in the main town. If you give her eridium she will poop and puke out weapons. Here you can find the new Garnet, Emerald, Rock and Diamond weapons. She can also give you Legendary weapons. A small achievement tip. If you feed her three times in a row you will get the achievement: Girls Gotta Eat!
This is the list over the new weapons in the DLC:

Aquamarine Aegis
Aquamarine Provacateur
Casual Swordsplosion
Citrine Coach Gun
Citrine Iron
Citrine Muckamuck
Citrine Rifle
Consummate Crit
Consummate Florentine
Cubic Zerconia Handgun
Cubic Zerconia Home Security
Cubic Zerconia Subcompact MG
Diamond Thinking
Diamond Transaction
Diamond Transmurdera
Diamond Vision
Emerald Carbine
Emerald Fox
Emerald Repeater
Emerald Sniper
Garnet Droog
Garnet Rifle
Murduring Orc
Nasty Ogre
Nasty Seeker
New and Improved Omen
Potent Grog Nozzle
Purging Stinger
Quartz Mashine Gun
Quartz Pistal
Quartz Room Clener
Quartz smig
Rock Ravager
Rock Slapper
Rock Torpedo

9. The Mysterious Amulet! When one player has it equipped i think nothing will happen. But when 2 players has it equipped, hearts will appeare around them. If 3 people has it equipped, hearts and stars will show up. If 4 players has it equipped, hearts, stars and a glowing thing is showing up. But what the friendship +7 is i have no clue! Some says that it has something whith the pixies, but i dont know! Tell me if you know something about it!

10. When you are in Flamerock Refuge you can see this pumpkin laying around. If you hit them and crush them all you will get a challenge!

11. After fighting the Sorcerer aka handsome Jack you can jump out of the platform to fast travel. But if you are standing on the platform where you killed the Sorcerer and looking down to the fast travel you can see this little platform under you. jump down there and you will find a secret dice chest!

12. If you go to The Forest of Being Eaten Alive by Trees you will meet Treants. And they have a chance to drop the legendary Bee shield!

13. The ultimate badass sorcerer`s can drop all the new grenade mods! They can be blue, purple or orange.
Here is the list over the new grenade mods:

Chain Lightning
Fire Storm
Fireball
Lightning Bolt
Magic Missile

14. If you talk to Roland after you have complete the game you can do a side quest called Winter is a Bloody Business. This is a reference to the HBO series Game of Thrones. In this mission you can slap King Joffrey. For those who is a Game of Thrones fan this will be a satisfying quest! And one of the main quests is called "Game of Games", and this is kind of like Game of Thrones. So i believe this is also a reference to the HBO series!

15. You will meet lots of dwarves in the new DLC and the dwarves can say "At least it's not a creeper" which is a reference to Minecraft!

16. In the Challenges section, the "Kill dragons" Challenge is called "FUS ROH DIE" who is a reference to Skyrim!

17. The sidequest "Sword in the Stoner" you get from Roland is obviously a reference to Sword in the Stone.

18. The side quest Lost Souls is a reference to the game Dark Souls! In this sidequest you have to find the Crestfallen Player who has lost his souls to a other player. This is referencing the fact that in Dark Souls players can invade your game and steal souls when you die, which annoys a lot of players. At the end you and the Crestfallen Player can fight the player called -=n00b_killer=- who stoled the souls!

19. When you do the side quest "Tree Hugger" in the Forest you will grow this tree named "Mosstache" who is the same as "Treebeard", and the tree from Lord of the Rings name is Treebeard. So maybe that is a reference to the movie!

20. Before entering Flamerock Refuge, look right to find the Flavor Cave in the Hamlet of Swift Passing Through. Inside the cave, youll find a special character.
His name is "Spatula Khan". Based on the warlord Genghis Khan, but with a spatula on his head. Talk to him to get a handful of choice quotes, all about genocide, warfare, and tastebuds.

21. When on the quest for Ninja Loot, there are three NPCs youll need to find; Boil, Mash, and Stew. A reference to the memorable line from Sam in The Two Towers when talking about potatoes boil em, mash em, stick em in a stew!

22. Secret chest location: When you are in Hatred`s Shadow, go past where the orcs and knights is fighting. Then look to your left, you will se a tent. If you go past the tent and looking down to the tree you will se a dice chest on top of it!

23. The name of the main town in the new DLC is Flamerock Refuge. Flamerock is a other word for Fyrestone and Refuge is another word for Sanctuary! So maybe this is a reference to the old main towns in Borderlands!

24. I just saw this when i was farming the Ancient Dragons of Destruction. The Ancient Dragon "Boost" raises the level of the other dragons by 1 each time he lands! And i just found out that the highest lvl is 72 for the dragons!

25. One of the lines Torgue says if you talk to him when he doesn't have any missions available is "I'm the most electrifying man in combat entertainment", obviously a reference to "The Rock" (Dwayne Johnson)

26. Some of the Wizards can say the immortal line "Klaatu Barada Nikto" fra the science fiction film "The Day the Earth Stood" from 1951.

27. When you get the side mission "MMORPGFPS" you will meet "3 other players(bots). In this mission you will have to fight these 3 players! And the reference goes to Call of Duty because you have to headshot one of the players (like quickscope in COD), the second you have to teabag (like everyone does in COD when they kill someone) and the third you have to meelee (like knife killing on COD) This is also a reference to all of the RPG role playing games out there!

28. The dwarves say "Hi HO" a lot which is a reference to Snow White.

29. When using the health machine, Dr Zed says something like 'you need health badly'. Seems to be a reference to the Atari classic arcade game 'Gauntlet'(thanks to alberick for the tip!)

30. "The Orcs Shall Perish" challenge is a reference to the game "Orcs Must Die". (thanks to SylarTheNinja)

31. If you go to the Circle of Slaughter Arena you will see that the place is called "Murderlin's Temple). Murderlin is a reference to Merlin the Wizard which is a popular wizard in many magic stories and myths!

32. The dwarves are scottish.(i thought they where irish) but you get the challenge called "Scot-Free" from killing them!

33. When you are in Flamerock Refuge, go past the tavern and you will se a fire! One of the persons there will be Deeejay and he will be wearing 3D glasses and headphones!

34. When you are in the Dwarven Mines you can meet a special enemy called "Spiderpants"! I have no idea what this is! If he can drop something or is a easter egg? If someone knows please post it here!

35. When you are facing Greedtooth he will turn into a Gold Golem! After you kill him go to Greedtooth chair! If you know the movie The Hobbit you will see that the chair is kind of alike the chair Greedtooth is sitting on!

Updated 09.07.13!
More will come!