Hey Ownedcore, my first time actually posting a contribution, but lets give it a whirl.
In the Heroic Scenario, A Brewing Storm the final boss Borokhula the Destroyer(Borokhula the Destroyer - NPC - World of Warcraft) has the buff Oversized Saurok, which causes him to be immune to Stuns, Movement Impairing Effects, etc. He also casts Earth Shattering and Swamp Smash.
All of this being said, the boss can be stunned regardless of the buff Oversized Saurok which means in turn you can stun him to interrupt Swamp Smash for the achievement Don't Shake the Keg, or to make this frequently qued into Heroic Scenario a bit more easy.
I know it isn't gamebreaking, or on the levels of some of the exploits we've seen here at Ownedcore in the past, but it's me a Leecher, tryign to do his part.