Worst methods of torture?

[Alon Shechter]

The Nutcracker.
A very slow nutcracker that moves very slowly for maximum tensity coming from said tortured male.

 

[Daveeo]

Skinned alive, all bones in the body broken and someone is constantly pulling your nerve fiber.

 

[pubbing]

The Breaking Wheel.

It is simply a round wooden wheel with spokes that you tie a person to than proceed to break all of their bones with a club.

 

[Trivun]

This requires two people to do properly. Think of a group of odd items, like lemon juice, jumper cables, salt, etc, and tell the other person to go get them. The other person asks "Where we gonna get this time of night?" To which you respond "You're right, go to plan B".
The person you are trying to torture will use his own fears to determine what you were planning on doing to them with those items, and likely think of something worse to do with them than you could actually think of. Also known as: MIND FUCK.

I read this and immediately thought of Discworld. Specifically The Ginger Beer Trick...