on the Skeletal Knights before Opera, you can use your pvp trinket to get out of Ice Tomb or what ever its called. rather helpfull when your the only one tanking . . or have no CC priests and have to give one to each tank.
also, as a Pally, Nine times out of ten, they keep trying to frost shock you if you keep dispelling it, and never even bothered to Ice Tomb me. maybe it was just luck, but worth a look to anyone about to kara soon.