I'm sorry to report that Sheldon Brown died last night (Feb 3, 2008) from a massive heart attack.
As many on this board will know, he has long been considered the expert on many cycling topics. See
www.sheldonbrown.com for a sampling of his expertise. He's been a regular contributor to many cycling lists, and always took time to share his wisdom with others.
I was fortunate to have had a chance meeting with him north of Boston last year, and he was equally engaging, entertaining, generous, and learned as I'd expected him to be.
A great loss for Boston and the cycling community worldwide.
Andrew C.
www.velofellow.com