Remember that this is my first time I try to contribute. This might be re-post or common sense.
If your warrior and your boosting someone/in normal group in Zul'Farrak it's helpful that the lower level/healer is at the end of the stairway banister (not sure if that is right word) and you fight at ground, because if that lower level/healer gets aggro the mob has to run all the way up the stairs and then down the banister to get to the low lvl/healer.
And here comes the "fun" part: when you charge or intercept that mob who is fighting at the banister, you run all the way up the stairs and then down to the mob.
This is not actually an exploit but its fun to intercept like 1000 yards. :P