I live very close by to Harris Cyclery, and have been in many times. I was often asked if I wanted to go down the stairs to see Sheldon, but I never did -I thought that I'd be more of a nuisance and guessed that he had to deal with that kind of thing quite often.
My claims to cycling fame revolve around Sheldon; I almost bought one of his bikes a couple of years ago, as well as he asked if he could post some info I'd written on his web site. Though I never talked with him directly, I'd contacted him via email and was surprized when I got an email from him directly answering some relatively trivial question -I couldn't believe he did that given that he must have received so many emails every day. Reading some of the message boards, I wasn't alone and this was truly his way.
One thing I'm glad I did is that I thanked him for his help, and asked if I could buy him a six pack. Though I'm close by, great intentions don't do anything, but I'm so glad I did take the time to do this -I dropped off a six pack of Harpoon IPA at Harris Cyclery (he emailed me this was his favourite).
A truly good guy.