@Eorl,
There is one aspect of the Dalai Lama's quote I would like to comment on at the moment. (I'm a little pressed for time here)
If if scientific analysis were conclusively to demonstrate certain claims in Buddhism to be false, I would rather say that the understanding of tose claims needed re-examining. Maybe indeed to be abandoned altogether, but while science is a matter of analysis and testing, philosophy is much more abstract. The important thing in Buddhism, for instance, should not be wether a concept is true or not, but wether or not that concept is a benefit to you. In Buddhism, and also sometimes in philosophy in general, things are more complicated than true/false.
But I agree fully that if a metaphysical concept, be it religious or philosophical, is in direct conflict with scientificly proven fact, it needs to be revised or discarded.
For me, philosophy is, to a large extent, about the metaphysical mirror image of the physical world as it is being described by science.
Science can't really tell us anything about ourselves as spiritual beings. It can only tell us what we have to work with in doing so. That is why philosophy and science shouldn't progress independantly, in my opinion.