I don't think I mentioned this explicitly but the best site for old AD&D/D&D products is the Acaeum. It includes images of covers, research notes, commentary, and a forum with pretty nice folks. It is oriented towards collecting older material.
To me the Old School Renaissance is not about playing a particular set of rules in a particular way, the dungeon crawl. It is about going back to the roots of our hobby and seeing what we could do differently. What avenues were not explored because of the commercial and personal interests of the game designers of the time.