Notable for this audience but perhaps not widely known: JMS engaged with Usenet to promote and discuss the show; if I remember correctly, the B5 newsgroup was active even before the pilot aired.

Obviously there was no social media at the time, and I would bet that was the first time a U.S. TV show’s creator was communicating directly with fans via the Internet.

(Update: more that I reflect on it, I think he was engaging with the community even while shopping the show around, but that was before my participation.)