Hitman

Hitman offers a variety of assassination services and contract killing options.
They are the industry leader in innovative killing techniques and manage a network of freelance assassins on five continents, available on short notice, around the clock.

Their tagline is "Permanent Solutions to Common Problems!"
And don't worry, Hitman is a cruelty-free organization. None of their services have been tested on animals.

Check out their site, they have testimonials, a page where you can donate organs, and they even have gift certificates!