They just re-launched this past weekend.
http://www.cyclingforum.com

Might be the oldest cycling board around - originally started out 1996 by VeloNews. Some good discussions on the latest tour news and events, fitness and nutrition, road rage, personal and computerized trainers, steroid usage, legal issues, frame builders, lighting, wheels, shoes, clothing and just about everything else relating to the cycling world - including information on various annual "TTF Rides" in your community.
http://www.cyclingforum.com