I don't think being an organ donor gets you any tangible benefits, but it alerts the EMTs and the hospital - should you be in a serious accident - to harvest your organs immediately for possible re-use.
This is more expedient than waiting around hours and hours until the next of kin make such a decision and sign the proper forms, by which time the organs could be rendered useless.

Exactly Wide Awake...

It just makes the medics aware that you wish to donate certain organs, or not, should you be in a life threatening situation. If you don't do this and would like to be a donor, by the time they get approval from family, it might be too late for the organs to be useable.

I have it on my licence.

I am an organ donor.

Benefits include:

Knowing that if I should ever be in a situation where I am going to die anyway--my organs will used to give life and/or improve life for others.

Realizing that even in death I can do something very loving for other people.

One live touches so many others...for every life that is saved/improved from mine, all the people who love that person also benefit from my life--including all the people each of those lives will touch in the future.

❁☆❁☆❁☆❁☆❁☆ ❁☆❁☆❁☆❁☆❁☆ ❁☆❁☆❁☆❁☆❁

Plus, I have the added benefit of knowing that none of my friends will douse me with BBQ sauce and eat me. :P http://www.answerbag.com/q_view/831187