A forum member started a topic to point out an issue with the Fog Creek website: On the top-left Fog Creek logo (which could be clicked to go to the main page), the tail of the letter 'g' was non-clickable. The poster pointed out that this should be fixed. Joel himself (who rarely participated on the forums) commented along the lines that the guy should immediately check himself into a mental hospital.
It was pretty hilarious, a lot of people took issue with Joel's comment and it was the drama for a few days. Standard web forum stuff :) Hmm, now I wonder if that kind of comment would be judged harder in today's climate!
I was very active on the BOS forums. But that isn't jogging any memories. Perhaps it was before my time?