Oculus Rift Guillotine Simulation
An anonymous reader tipped us to news of an interesting hack for the Oculus Rift: a simulation of being beheaded by a Guillotine. Thrown together in a couple of days at the Exile Code Jam, the simulation lets you... "look around to see the blade above, the crowd of onlookers around them, and the executioner who signals the blade be dropped. It also enhances the experience when someone watches the blade falling on a nearby screen and taps the user on the back of the neck at the time of impact."
Just a bit morbid. There's a video of people "playing" (nsfw language in a few reactions to being virtually beheaded).
Given the many advances of medical technology I'm sure that waterboarding is far from the worst.
You could probably hook stuff up and play a person like an instrument without killing them.
On a related note, if there really were hard to kill creatures like vampires, werewolves or those "highlander" bunch, they would certainly not want to ever get caught by a sadist.