In the past Rogue's were WoW's top melee DPSer and with almost unparalleled single target control were dominant in PVP. Over the years the class has changed into what many call a "CC Machine" suggesting the Rogues damage has been diminished to the point that their value in PVP is only control. The debate continues.
Choose Your Specialization
Bring silent death.
Fly across the battlefield.
Remind them they are dead.
Most players feel that the latest patch has made the Rogue PvP spec much more balanced and playable. Here are some videos showing the latest changes for each spec (Assassination, Combat, and Subtlety):
Subtlety Rogue PvP Spec
Combat Rogue PvP Spec
Assassination Rogue PvP Spec
Featured Video: 6.0.2 Fury Warrior PvP
This warrior is indeed too fast and too furious as well.