The following two world buffs are not hotfixed yet as of August 28, 2010, and they are still capable of being spellstolen by mages then used in ICC25. Both of these mobs can be found in the quest area near Star's Rest which cast these buffs.
Focus Wizard - NPC - World of Warcraft
Arcane Focus - Spell - World of Warcraft
Magister Keldonus - NPC - World of Warcraft
Might of Malygos - Spell - World of Warcraft
To those of you mages who choose to use these enjoy breaking meters until they are hotfixed!