Yep, just as Danny said, "Way to Blue" is a the best introduction to Nick Drake (it sez so on the album!) that friends of mine gave to me.
But beyond that...everyone and their mother has the "Pink Moon" album, it seems to be universally liked by the masses...
I still have to seek out all the albums myself tho....Byter Lyter, 5 leaves left, and Pink Moon. Anyone want to chime in on their fav?