Via the Wikipedia entry, I find this source, which cites a 2005 Harris poll to the effect that NPR is the most trusted newssource in America.
That being the case, WHY DO WE CONTINUE TO PUBLICLY FUND IT? If you're the most trusted newssource in the land, surely you have enough market pull to foot your own bills?
Not that NPR's endowment eats up much of the federal budget, mind you. It's just the principle of the matter. Governments should not fund broadcast services. That is something that the public can (and obviously does) take care of itself.