I once had the script activating Big Bad Wolf in Karazhan Opera to say "*Snarling* Run away little girl!! Run away..." Every time I used Reckless. And I had a battle-cry script when I used Death Wish... It was the time when I did 16k+ dps in Wotlk as a fury warrior, but nobody wanted me for pugs as "no, ur a warrior and they can't do gd dps" ...
But I like to listen to Arman van helden - I want your soul every time I play warlock and use soul-drain <3
But OP: No. I want one to yell, but I don't have any. I see the point as it boosts the mental morale sliiiightly but not enough for me to get around and make one as it seems.