I haven't actually listened to any of his work, though I've been meaning to for a long time (if anyone has any, I'd appreciate an upload) but I've read some of what he's written and I find it pretty interesting. It's easy to write him off as a pretentious nutjob but then again so are most revolutionary musicians. In any case, I really created this thread to share this link:
John Cage - Uncyclopedia, the content-free encyclopedia
because I find it to be absolutely hilarious.