Last night at the Django meetup, we also talked about unit testing. Someone mentioned continuous integration, and we all discussed our favorites. At one point, the fellow at whose offices we were holding the meeting mentioned that his team used Hudson and pulled up an example on the overhead projector. I mentioned that Hudson was my favorite as well, and he said, "Yes, I think it was your blog entries that led me to this solution."
That's the second time this year I've walked into a meeting and someone's said, "I've used something you wrote." Kinda cool. Wish it was addictive.