If you've got a Horde PC of 26th level or higher, there's a very neat but quite obscure quest you might want to try, called "Test of Faith". To get the quest, you need to find a tauren named Dorn Plainstalker. He's in a little cave called the Weathered Nook up on the canyon wall of Thousand Needles, northwest of Freewind Post and just a little west of the centaur encampment. The path up to the cave has a torch at the bottom of it, so it can be found if you know or bother to look. I found him by accident.
Anyway, be sure to read the quest text and do exactly what he tells you.
The quest is the beginning of a quite long chain that eventually ends up in the Scarlet Monastery, but the first quest is just fun in and of itself, and quite reqarding in relation to the work you have to do.