I had this happen to me last night in a BG, then I started using it on others.... it is soooooo fun. I have a rogue that I PVP'ed with almost exclusively, so I used to stunlock the heck out of clothies and kill 'em. I often thought druids lacked this ability. But they don't.
I was in kitty mode and pounced (first stun)
Then mangle, and a shred...
Then Rip (second stun)
Then Tiger's fury and mangle again
Then pop into bear form and use bash to stun again.
I was fighting a deathknight (very OP at lvl 69) and got him down to 1/3 health this way, then mauled him to death.... it was so fun! I am going to go out and practice this technique on mobs to refine it and such, but wow! That was cool.
I may be on to something, or this may be one of those "OMG, what a n00b... duh, we knew about that since forever ago".
Happy PVPing.