I've been watching this religiously since it started. I manage to catch almost all the episodes live, and there's a great set of people on the Twitch/IRC chat as well. (I'm "nxsy" on there.)
I also wrote a Linux platform layer for it for fun [1] and for those who were skeptical about Casey's approach to portability (and there are a few people who pitch up who are/were aggressive about his choice of starting platform and/or his approach).