Enough miners and herbalists have complained about having to depend on random spawns -- and compete with gold farmers -- that Blizzard has finally put in a way for these two professions to control their own destiny.
Several mobs, including rock giants in Hellfire Peninsula and nature elementals in Zangarmarsh and Coilfang Reservoir, can be "skinned" for ores and herbs, just as if they were a node. While running through the Underbog in Coilfang Reservoir Thursday night, I got a couple of Ragveils, a Terocone, some quest herbs, and a few useless gray mushrooms from skinning the elite Loatheb-like marsh elementals inside. The skinning results are kind of random, and the mobs will be farmed as easily as the herb spawn points were, but it's still an interesting new way of getting your base materials.
Have you found anything else while "skinning" for herbs and ores? If so, what and where?