Sheldon Brown Bike Advice, Branford
Sheldon Brown Bike Advice, Lickton's. I find Sheldon and Branford to be the two best sources on the Internet. There was recently a story about Sheldon in Bike magazine and it is true he knows an amazing amount. Very responsive on mail too. I highly recommend any of these small local shops. You can pretty much call any of these folks and they know what to get you.
Right now I'm rebuilding the cassette on my bike and other things and it has been great to read and ask questions of them.