Caveat Lector: If you are attempting to avoid the emotional or ethical struggles regarding the Terri Shiavo case, then don't read this post.
If this account is true regarding Terri Shiavo, then I would have to decide now that it is wrong to let Terri Shiavo die from starvation. This account is told by Barbara Weller, an attorney who represents Terri Schiavo's parents, Bob and Mary Schindler.
Basically, Barbara Weller states that she had meaningful interaction with Terri Shiavo. This would, at the minimum, place a "shadow of a doubt" on whether Terri is not conscious of her surroundings.
If that is true, the Terri is being killed; she is not dying "naturally" but being starved to death against her will.