I've been spending some time with Dreyfus and Kelly the last two weeks. I like what they're up to in their book, All Things Shining, and also in their respective courses based on the themes in the book, which you can find on podcast here for Kelly's Harvard seminar or at iTunes U for Dreyfus's undergraduate lectures at Berkeley.(Search iTunes U for 'Dreyfus, Philosophy 6') While I have a couple of problems with what I see as the limitations of their approach, I see them as as allies insofar as they are struggling in a post-Nietzschean culture-world to develop a non-nihilistic way to understand the human experience in its relationship to Being.
They want to do it avoiding a monotheistic ontology, and they see possibilities for a renewed sense of the sacred in a recovery of a polytheism in a postmodern key. They spend a lot of time with Homer's Odyssey and with Melville's Moby Dick arguing that Homer and Melville give us important clues about experiencing a world that is infinitely rich and full of meaningful distinctions. Meaningful distinctions are precisely what nihilism cannot make.
I like the basic Heideggerian project they are promoting, which is to break out of the Cartesian subjectivist bubble. From my Barfieldian Christian point of view, Heidegger is one of the key thinkers involved in laying the philosophical foundation for the movement toward Final Participation. And I see the value of what they are doing as a credible (because of their incredible credentials) translation of "Heidegerrian" into a language that non-specialists can understand.