If you're interested in audio recording or mixing, gearslutz is the place. I haven't posted there in a while but there's a lot in common with HN.

This thread is recent but there's some great older stuff that I recall. Check out this thread from Bruce Swedien - http://www.gearslutz.com/board/bruce-swedien/83165-seven-peo... (scroll down for the bit about MJ)

Edit: Here's a story from Bruce about recording and mixing Billie Jean - http://www.gearslutz.com/board/bruce-swedien/84587-real-stor...