For some reason I can't use the Talent Calculator right now, but let me explain what I mean on this.
Hammer of Justice stuns the target and has a 60 Seconed CD. Lets you attack the target freely while they sit there and can't attack back for a few secs.
Improved Hammer of Justice- Reduces the CD of Hammer of Justice by 10/20/30 Secs.
Judgments of the wise (Prot, seconed to last)- (blah blah random stufff) and reduces the CD of Hammer of justice by 10/20 Secs.
Leaving us with a 10 sec Hammer CD.
Then we have our 60 PVP 3 Set bonus- Reduces the CD of Hammer of justice by 10 secs (If anyone has a newer set with this bonus, please share, I haven't had time to check all of the 70 PVP gear and such =p)
So that's a 0 sec CD with Hammer, leaving it spammable. Combine with the fact that (atleast presently) Prot Destroys other physical DPSers ("OP DK's" are nothing to me =P) this would make prot a force to reckon with in PVP. Specially with the Silence and stuff it's getting... Additionaly you can throw in the Seal of justice (which gets longer thanks to the same prot talent that reduces our Hammer's CD) and you can basically perma stunlock someone :O!