There's enough material floating around on Robert Pirsig to keep you busy for a while no matter what your level of interest might be. If you're in a seriously philosophical mood, there are two at least two Doctoral dissertations, a gidebook,a textbook and a Master's thesis. There are also options if you want to discuss Pirsig's work or even if you're interested in exploring all the nooks and crannies. There's even a book that gathers previous online discussions and then adds a series of comments from Pirsig about the various interpretations. Maybe there are times when you're torn between the desire for edifying self-improvement and the desire to veg out on your couch. In that case, some documentary films about Pirsig might be just what the Doctor ordered.
In the interest of full disclosure, it should be said that I have a personal bias about almost everything that's linked above. The documentaries were produced by Dr. Anthony McWatt, for example, the guy who first introduced me to Pirsig and who has since become a good friend. Ron DiSanto, the co-author of the Guidebook to Zen and the Art of Motorcycle Maintenance,was one of my thesis supervisors and we both appear in at least two of McWatt's films, although not the same films. I'm well acquainted with the author of Lila's Child: An Inquiry into Quality,and the discussion group is hosted by one of my very favorite dudes. (You do NOT want to get into a "cool" contest with this guy, trust me.) I don't personally know David Granger but his booklinks Pirsig to Dewey beautifully and since my thesis links Pirsig to James, I have to love the guy for pragmatic reasons. Even if you only like this stuff half as much as I do, you're going to have a real nice time.