No one with something serious?
Well, it'd be much better if it were slow.
I may start with something very light, but painful, like 1st degree burns. I would make sure that it is on places like the belly or inner thigh...cause it hurts the worst there.
Employing pyschological torture would be a must. I would pretend that I was being forced to do it against my will. I would give them false hopes of freedom, then, pretend to save them, but have them get caught by a masked figure, or have it to where they get out of their room, only to find themselves locked in the hall, similar to how it was in Hostel. It would be quite funny to watch their hopes rise and fall. I would keep them healthy, of course, make sure they had healthy food and exercise. The process of watching their mental state deterorate as time went on would be amusing.
Once they reached that mental state of what I think is a point of no return, I would make it seem like they could be free, for real. I would pretend to kill the "guard" and take his keys, and unlock the hall door, and have the victom running for freedom down a long hall that has a light at the end. Of course, it would be a mirror trick, shining light from a really high up "sky light" with a mirro reflecting the light at the end of a dead end. Paralysis dart to the back, and back in the chamber. They should be close to a permanent mental break down at this point. Of course, I would have kept the light torture still up, with things that have no real permanent damage. (other than discoloration for a few months.)
This whole time would have the victim isolated, in complete darkness, chained up.
Once they REALLY broke...and I mean broke to where they didn't even want to escape anymore, that's when the fun would begin. lulz. I would have them knocked out, and I would make some cosmetics on their face that made it look like...their face had a gash on it with a flap of sking hanging down, all sorts of cuts, etc....but, I would have them complete restrained and in a lying position, with a mirror close to their face for viewing their hideous self. I would only have them awoken for a very very brief period, just to view themself for 2 minutes, and then the mirror removed, them put back to sleep, the "make-up" removed, and them woken back up with the mirror there again. This type of torture would last for a while.
I think I would also bring their health from low to high to low to high...just compound the torture with another dimension.
On top of this, I would implement facility yo-yoing. I would switch them from a nasty place, to a nice place. I would use the hope of the "nice" place as a form of torture by pretending it was coming, then it not happening. Then, pretending that the person thought it up and claim I never said that. It would work well to causing the person to lose their mind as they would have a hard time with reality, especially when they are starving.
Other torture implements such as "blindness" that wasn't really blindness but a drug induced blindness that was temporary; making them believe absurd things, then reasoning them out of the belief, the pretending as if I had never reasoned with them on it; etc.
Physical pain can only take torture so far. The pyschological portion of torture is reall where the complexities of fun begin. Physical pain should be used, yes, but only as a supplementary tool. Mutilation can have devastating pychological effects, but that only works so many times.
Once I truly and fully broke the person, I would try everything to make them "better." It could take quite a long time, actually. Once I did that, then, I would give them true hope, and seemingly get them free. Of course, they would be captured, whilst being driven in a recongizable area. Then, the real physical "to the death" type of torture would begin. It would include preventing as much blood loss as possible. I would cauterize the wounds as they were made, just to prolong the life as much as possible. I would have compatible blood on supply, just in case they lose too much (specifically to keep them awake as much as possible.)
Those are things just off the top of my head. If I had time to think about it, I could plan it out much better than that, of course.
Of course, this would have to be a person I didn't like. I mean REALLY didn't like. As of right now, I don't know of anyone that I would want to do something like that too.