I'd like to sign one of those that says I don't want to be killed or allowed to die just because a doctor decides it is "best" for me.
The right-to-die waters are awfully muddy. We can see that by the way the people who want Terri to die are playing word games.
Word games are a good indicator of something amiss.
I was just reading an article which says that Physician Assisted Death, voluntary euthanasia and removal of life support are ethically equivalent. The author mentions that more people accept removal of life support than the other two methods of bringing about death. He suggests that, if people could be convinced of the ethical equivalency of all three, they (and physicians) would be much more accepting of Physician Assisted Death.
http://www.hemlocknj.org/equivale.html
Whether that physician responds to the patient’s repeated entreaty to "Help me die" by removing a life support system, by PAD or by euthanasia, in all three cases both intention and result are the same. In sum, there is no principled ethical difference among these three means to serve the dying patient. In this context, helping the public and physicians to recognize this ethical fact may well bring acceptance of PAD and euthanasia up to the 90% mark now current for refusal of treatment. (Interestingly, this is about the level of support for the Dutch way of dying now current in the Netherlands.) In such an environment it would appear that decriminalization of PAD and of euthanasia under reasonable rules barring abuse could easily be achieved.