AFAIK yes. Up to 8 people.
Do you mean saving figuratively? (Also addressed at drethelin who used "save a life".)
Heart, lungs, liver, left kidney, right kidney = 5, and that's being generous.
Pancreas and corneas certainly improve quality of life, but aren't life savers. For skin grafts there's alternatives AFAIK.
Is there a stash of secret organs I'm missing?
Here's the new thread for posting quotes, with the usual rules: