When is torture justified?

[hornylimerick]

I was watching Blue Blood the other evening and the cops arrested a pedophile for abducting a child! He would not say where he had put her so they stuck his head into a toilet until he did!

It got me thinking, is it ever justified to use torture?

If there was an imminent terrorist attack, and, you have the guy that planned it. How far should we as a society allow our security forces to go to save lives?

torture maybe, castration definitely! as far as sick bastards who play with kids!!!!!!!!!