pssh, rare, you have no idea. spamming mangle in bear form is fun, but they still get to beat on you. in other words, they think they have a chance.
old skool root on wars and rogues meant you alternated rank 1 root with max rank starfire, and repeated till they died. mana didnt matter, cause you were specced resto and had innervate. theres nothing quite as nice as FFing a rogue, rooting him, then killing him while hes completely helpless. sure, he may try to vanish/prep/vanish to break the roots, but it only delays the inevitable, and instead of just dying hes now dead and out two vanish powder.