There are a lot of options to continue to build and enhance your character after you have reached level 70. This is only the beginning...
The Burning Crusade was released in January, 2007. This expansion adds a LOT of content to the game which should keep players busy for a while.

Classic Reputation & Rewards

There are many factions that unlock special items and equipment for your character once you've earned their respect. Here are some examples:
Argent Dawn - The Argent Dawn is an organization that makes no distinction between Alliance or Horde, but instead tries to unite the people of Azeroth in the fight against evil. Check out the Vendor Rewards, Armaments of the Dawn, and Recipes that you can earn.

Brood of Nozdormu - Events have been set in motion that will shape the future of all of Azeroth, as the attention of the Brood of Nozdormu is focused on Ahn'Qiraj, the fortress city of the Qiraji. It is there that those who are brave enough to heed the dragon's call should travel. There are very powerful Quest Rewards and special Signet Rings to earn.

Cenarion Circle - At last, the long watch has ended - the hero has risen, to mend that which was broken, to unite those who were divided. But the true test is yet to come. When the gates of Ahn'Qiraj open, will the mortal races stand united once again and face the onrushing terror. or will they fade silently into the darkness that has risen once again in the distant lands of Silithus? You can purchase Vendor Rewards, do Field Duty Quests, and earn Class Quest Rewards. Learn more here.

Thorium Brotherhood - Adventurers seeking out Thorium Point will find that the dwarves of the Thorium Brotherhood hold great rewards for those who aid them in their never-ending struggle against their former brethren. Check out the rewards here.

Timbermaw Hold - The Timbermaw are painfully aware that they will not last on their own against the corruption of the land; adventurers who seek out Timbermaw Hold in northern Felwood and prove themselves as friends of the Timbermaw will learn that the furbolgs value their friends above all else. Check out the rewards here.

Zandalar Tribe - The Zandalar tribe has arrived on the shores of Azeroth to battle Hakkar once again. Aid them and they will grant you powerful rewards. Check out the vendor rewards here and class quest rewards here.

Darkmoon Faire - Players can earn tickets by doing repeatable quests that they can redeem for special rewards. Check out the rewards here and the buffs here.

Burning Crusade factions coming soon...

B.C. Reputation & Rewards

There are many classic factions that unlock special items and equipment for your character once you've earned their respect. We'll be creating Burning Crusade reward pages in the coming weeks and months.
Reputation Rewards

Honor Hold/Thrallmar
Cenarion Expedition
Sporeggar
Kurenai/The Mag'har
The Bone Wastes
The Consortium
The Violet Eye
Keepers of Time
Scale of the Sands
Shattrath City
The Aldor/The Scryers
The Sha'Tar
Lower City

PvP

Arathi Basin






Champions Hall

Player vs. Player Combat
You have equipped yourself and are at the maximum level. Now it's time to use your experience to defeat other players. Discover Player vs. Player combat! There are various events you can compete in:
Honor System - Earn honor points to use to buy mounts, items, and more
The Arena - Compete on a ladder and earn very powerful items
Four Battlegrounds - Earn special items and honor points
Azeroth Outdoor Pvp
Outland Outdoor Pvp - Some rewards can be gained here
Gurubashi Arena Booty Run
Fight at a special arena in Dire Maul
Player vs. Player Rewards
While participating in Player vs. Player combat you can earn Honor Points to spend on items. To find the rewards Alliance players should head to Champions Hall in Old Town in Stormwind. Horde players go to the Hall of Legends in Orgrimmar. Inside you'll find NPCs with cool things to buy. For the Battleground rewards you'll have to head to the entrances of the Battlegrounds to purchase some of the rewards (Warsong Gulch/Arathi Basin). While we don't feature every item on our site, here's some of the things you can buy:
Weapons
Armor
Mounts
Hellfire PvP Rewards (Coming Soon)
Zangarmarsh PvP Rewards (Coming Soon)
Nagrand - Halaa Tokens (Coming Soon)
The Bone Wastes (Coming Soon) - Combo of PvP and PvE
Alterac Valley Rewards
Arathi Basin Rewards
Warsong Gulch Rewards

Professions Mastering

If you wish to be a master craftsman, you will need to work hard and spend time perfecting your skills. Certain special recipes can only be collected in high level dungeons; the bosses within can sometimes hold plans for very powerful items. Once you have these recipes you will be able to create new items that you can use yourself, give to friends, help your guild, or sell to other players for a king's ransom.

Below are four of many recipes which can be obtained
Plans: Sulfuron Hammer

Plans: Sulfuron Hammer
Unique
Requires Blacksmithing (300)
Use: Teaches you how to make a Sulfuron Hammer.

Sulfuron Hammer
Binds when equipped
Two-Hand Mace
176 - 295 Damage Speed 3.70
(63.6 damage per second)
Requires Level 60
Chance on hit: Hurls a fiery ball that causes 83 to 101 Fire damage and an additional 16 damage over 8 sec.

Requires Sulfuron Ingot (8), Dark Iron Bar (20), Arcanite Bar (50), Essence of Fire (25), Blood of the Mountain (10), Lava Core (10), Fiery Core (10)


Formula: Enchant Weapon - Spell Power

Formula: Enchant Weapon - Spell Power
Soulbound
Requires Enchanting (300)
Use: Teaches you how to permanently enchant a weapon to add up to 30 damage to spells.



Schematic: Core Marksman Rifle

Schematic: Core Marksman Rifle
Soulbound
Requires Engineering (300)
Use: Teaches you how to make a Core Marksman Rifle.

Core Marksman Rifle
Binds when equipped
Gun
64 - 120 Damage Speed 2.50
(36.8 damage per second)
Requires Level 60
Equip: +22 ranged Attack Power.
Equip: Improves your chance to hit by 1%.

Requires Fiery Core (4), Lava Core (2), Arcanite Bar (6), Delicate Arcanite Converter (2), Thorium Tube (2)


Pattern: Shifting Cloak

Pattern: Shifting Cloak
Requires Leatherworking (300)
Requires Elemental Leatherworking
Use: Teaches you how to craft a Shifting Cloak.

Shifting Cloak
Binds when equipped
Back
48 Armor
+17 Agility
+8 Stamina
Requires Level 57
Equip: Increases your chance to dodge an attack by 1%.

Requires Rugged Leather (30), Essence of Air (12), Skin of Shadow (4), Guardian Stone (8), Cured Rugged Hide (4), Rune Thread (8)


Classic Dungeons & Raids

Zul'Gurub
As you reach higher level, try out the more powerful dungeons and raid encounters up to level 60.
Small Group (5 players)

Dire Maul - Feralas - 5 player limit. The ancient city of Eldre'thalas holds many secrets. Venture into the three wings and uncover what dwells within.
Stratholme - Eastern Plaguelands - 5 player limit. Explore the last bastion of the Scarlet Crusade, or face off against the malicious Scourge.
Scholomance - Western Plaguelands - 5 player limit. Discover the mysteries of the strange school of magic lorded over by Headmaster Gandling.
Blackrock Depths - Between Searing Gorge and Burning Steppes - 5 player limit. Delve into the winding metropolis of the Dark Iron Dwarves.
Lower Blackrock Spire - Between Searing Gorge and Burning Steppes - 5-10 player dungeon. 5 players for quest credit. Face the bulk of the army within the Spire, led by Overlord Wyrmthalak.
Small Raid (10-20 players)
Upper Blackrock Spire - Between Searing Gorge and Burning Steppes - 10 limit - This is a good area to transition into more powerful areas such as Molten Core or Zul'Gurub.
Zul'Gurub - Stranglethorn Vale - 20 player limit
Ruins of Ahn'Qiraj - Silithus - 20 player limit


Blackwing Lair
Giant Raids! (40)+
After playing with parties, you can team up with other players to raid the most powerful dungeons and monsters. The earlier dungeons are there to prepare and equip you for the most dangerous areas in the world.
Molten Core
Onyxia
4 Dragons
Azuregos
Lord Kazzak
Blackwing Lair
Temple of Ahn'Qiraj
Naxxramas

Burning Crusade Dungeons & Raids

You've worked your way to the top of the game. Now it's time for a real challenge. You must now face the most powerful areas and monsters in the game. Do you have what it takes? We think so!
Small Group (5 players) Here are the new Dungeons in The Burning Crusade. These dungeons are found in both Azeroth and Outland.

Hellfire Citadel - (Region: Hellfire Peninsula)
Hellfire Ramparts (60-62)
The Blood Furnace (61-63)
The Shattered Halls (70-72)
Magtheridon's Lair (Raid)

Coilfang Reservoir - (Region: Zangarmarsh)
The Slave Pens (62-64)
The Underbog (63-65)
The Steam Vaults (70-72)
Serpentshrine Cavern (Raid)

Auchindoun - (Region: Terokkar Forest)
Mana-Tombs (64-66)
Auchenai Crypts (65-67)
Sethekk Halls (67-69)
Shadow Labyrinth (70-72)

Caverns of Time - (Region: Tanaris Desert)
Escape from Durnholde (66-68)
Opening of the Dark Portal (69-72)
The Battle for Mount Hyjal (Raid)

Tempest Keep - (Region: Netherstorm)
The Mechanar (69-72)
The Botanica (70-72)
The Arcatraz (70-72)
Tempest Keep (Raid)
Raid Dungeon
Karazhan - Deadwind Pass - 10 player limit.
Raids! (25)+
After playing with parties, you can team up with other players to raid the most powerful dungeons and monsters. The earlier dungeons are there to prepare and equip you for the most dangerous areas in the world.
Magtheridon's Lair - Hellfire Citadel - Hellfire Peninsula
Serpentshrine Cavern - Coilfang Reservoir - Zangarmarsh
Tempest Keep - Netherstorm
Gruul's Lair - Blade's Edge Mountains
The Battle for Mount Hyjal - Caverns of Time - Tanaris Desert
Black Temple - Shadowmoon Valley
Outdoor Raid Encounters

Doomwalker - Shadowmoon Valley
Doom Lord Kazzak - Hellfire Peninsula

Events

Fishing Event
Take some time to check out the special in-game events in the world of Azeroth!
Battleground Holiday
Stranglethorn Fishing Extravaganza
Gurubashi Arena Booty Run
Elemental Invasions



Feast of Winter Veil
Seasonal Holidays
Make sure you check out the Azerothian Holidays offering things to do for both high level and low level characters. Two of the most popular Holidays are Feast of the Great-Winter and Hallow's End, don't miss them.

Other

World of Warcraft & 60
GameSpy PC has written a giant guide on what to do at level 60. Enjoy the read!

Tried an "Alt"?
Now that you've powered up one character up to level 70, perhaps it's time to try out another class! It's much easier the next time around, as you now know where you're going and where to find quests and adventure. You can also spend some money to equip your low level character with powerful weapons and equipment to give yourself an edge. If you have played the Horde, you might try an Alliance character or vice versa.

Tried a Blood Elf or Draenei?
You can level up in completely new areas in The Burning Crusade expansion. Start a Blood Elf or Draenei character.