WOW Gold, WOW Powerleveling, World of warcraft.

With the Opt-In being announced recently for the Wrath of the Lich King beta, many lucky players will soon be checking out Northrend.
Now, as the title says, what would you like to experience in terms of encounter design in WotLK? There have been so many different encounters since World of Warcraft was released years ago, but some are more memorable than others. How about the "dance" during Heigan the Unclean in Naxxramas or Sapphiron where you must move behind the ice blocks or you die? There's also Onyxia, where you have to move to the sides, depending on her position, or you'll get deep breathed and most likely wipe.
Furthermore when Blackwing Lair came out, Razorgore was very hard and Blizzard had to change the design to make it possible to overcome by more guilds. Monsters kept spawning over and over in the Razorgore fight and you had to control Razorgore with a mind orb and while having Razorgore in control your mission was to destroy as many eggs as possible while the rest of the guild made sure to control the constant spawning dragonkin and orcs.
Several players enjoy the C'Thun fight in Ahn'Qiraj; it's quite unique and takes a lot of coordination to overcome. A lot is going on at the same time, which is pretty much comparable to all the end bosses of the raiding instances in World of Warcraft, Ragnaros, Nefarion, Kel'Thuzad, Illidan and Kil'Jaeden. All very challenging and well designed encounters which forced your guild to overcome many challenges.
Thaddius in Naxxramas is another great example of interesting encounter design. You have to move to a different location depending on what debuff you have on you and if you don't you will hurt the raid over and over and wiping is unavoidable. This requires from everyone to constantly be alert and to pay attention...