Ok, since I'm a lazy leecher I can't search, so I have no idea if this has been posted before... I looked around and couldn't find anything remotely recent that involved this. On to the goodness!:
Defending the farm in AB:
Handy for: Gnomes, Humans, Dwarfs, Undead, Blood Elves and Trolls (Only if you don't have stealth... if you have stealth, this is useless)
Not handy for: Draenei, Orcs, Tauren (Your body's are too massive.... L2Exercise!)
Hide in one of the middle two Stalls (if your human, go for the on with the horse in it because all the other hay stacks are too small) Position yourself so that you're getting that nice horses ass scent, and lie down.
I've had multiple enemies target me in this spot, and not do anything because they can't see me... be warry of hunters though.
Hiding Flag in WSG:
Handy for: mostly alliance, only because as horde, you wouldn't really want to hide near the alliance base
Not Handy for: Draenei or other large races (Richard Simons might help you with this... and you'd fit right in with those hooves saying "I'm a pony!")
Ok so basically as a rouge or druid (only because they have sprint which is helpful but not required, any class can do this) if you are facing the entry to the tunnel, you go to the right side and wiggle your way here:
I've hidden there for a long time with out being found, but as soon as you're flag gets put on the map, it's time to start running
Sorry if this has been posted before, and I hope this has been comprehensive enough for everyone.
Have fun
[Edit]: fixed some grammar mistakes and made it read slightly smoother in a few areas also added some colored headings