Great stuff. You will be supprised at just who can donate. Even if you have heart,lung or kidney problems some bits of ya are still usefull. Even after you die skin, bone, heartvalves and corneas can be donated upto 48hrs afterwards. Even Hepatits B donors can donate is certain circumstances particuly if the recipient has Hep B. Remeber talk to your loved ones and tell them your wishes even if it is not to donate anything. At least they will have the comfort of knowing your wishes were carried out.
Live long !