In My Humble Opinion: Great Bike Links!

http://www.blackbirdsf.org/cx/christopheoncx.html - A really cool vintage cyclocross skills guide with great pictures.

http://velosniper.blogspot.com/ - Fantastic (dead?) blog featuring eBay auctions for classic bike paraphernalia with expert commentary- last post December 2008- unfortunately

http://thebikeshow.net/ -Listen to this, no really, listen.  Podcasts back to 2005 include interviews and segments with the late, great, Sheldon Brown.  Also includes material from Alex Moulton and Grant Petersen!  Great for those train commutes.

http://lovelybike.blogspot.com/ - Probably my favorite bike blog out there, charmingly well written, an ever interesting examination of the world cycling through the (good) eye of a budding enthusiast.