Summary:
The most used:
Titles:
1. Champion of the Frozen Wastes
People, who says: "Jenkins is a title for noobs!" uses this title.
2. Jenkins
People, who does not have "Champion of the Frozen Wastes" yet
3. Challenger
S6 played too much people to get this title really easy.
4. of the Nightfall
Easy mode title in 3.2 because of speedkill.
Ground Mounts:
1. (WOTLK) Bear Mounts
So much people uses the "For the Horde!" achievement mount, but richer people uses Armored Brown Bear.
2. Mammoth Mounts
For 200 SKS or for revered with SOH.
Flying Mounts:
1. Bronze Drake
No comment
2. Red Drake
Richer people uses this instead of Bronze Drake
How to get:
Titles:
1. Champion of the Frozen Wastes
Kill all last heroic dungeon bosses + Kel thuzad and Malygos.
2. Jenkins
Invite to your group classes with AoE spells, go to Blackrock Spire (You dont need Seal of Ascension since 3.2), kill first boss.
You will need 2 tanks.. One tank will pull the right side of eggs, Second tank will pull the left side and when they are all on the same place, then you can kill them. Because if you kill 1, counting will start. Enjoy your title!
3. Challenger
Get 1500+ rating and wait to the end of seasson :-)
4. of the Nightfall
Invite top geared Damage Dealers (You really need DPS Feral Druid!) + Top geared Tank + Top geared Shaman Healer to your group, go to OS10, kill all trash, then evade the boss (Rogue'S Vanish or [Crashin' Thrashin' Racer Controller]). When Sartharion have 30%, Feral Druid will switch to Bear Form, Taunt add (Boss Drake, no matter which), switch to Cat Form, Dash and kite him. If nobody dies on waves, you have the Title and if you are a ninja, you have a Drake, too. Enjoy.
Ground Mounts:
1. (WOTLK) Bear Mounts
For Black Bear, kill main bosses in Alliance/Horde cities or buy Armored Brown Bear from Mel Francis for ~700g
BTW. If you are in 1:10 Alliance: Horde or 1:10 Horde: Alliance, then [For the Horde] achievement is easier mode than easy mode.
2. Mammoth Mounts
Complete 3 weekly Wintergrasp quests, then kill 43 bosses in heroic dungeon when you control Wintergrasp or get revered with Sons of Hodir
Flying Mounts:
1. Bronze Drake
Complete Culling of Stratholme in 20 minutes
2. Red Drake
Earn Exalted with The Wyrmrest Accord (Equip Wyrmrest Accord tabard and do heroic dungeons) and buy it.
I hope you will understand it and you will get that unique Titles/Mounts really fast, because it is cool now ;-)