My latest bit of insanity - a brewing Wiki (editable encyclopedia). I set up the basic structure using MediaWiki and now others are starting to join in and add to it.
http://www.brewwiki.com
You need an account to edit, but none is needed to read it.
Also - I recently added two more sites of interest:
-- BeerSmith Blog - Weekly Home Brewing Articles
-- BrewPoll Beer Brewing News - A Web 2.0 Brewing News and Social Site
Cheers!
Brad