For the repeatable Ogri'la / Skyguard quest in Blade's Edge Mountains called "Bombing Run" or something, in which you bomb Cannon Stacks in the Fel Encampments. If you suck at dodging or it's harder for you to dodge the Flak Cannon shots with your slow Riding mount (assuming you dont have an epic flyer) then you can simply walk up to the cannon stack on foot, mount onto your flying mount and shoot the cannon stack very fast and then dismount, often times, if fast enough, the Flak cannon wont even shoot you once. (I always have my mouse hovered over the stack and my cannon skill on a key while my mount is casting)
This would be especially effective for stealthing classes since they can dodge mobs very easily.
I found this to be extra effective because personally I just plan suck at dodging those shots on a Blue Flying mount :S.
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