I've never watched B5, but I'm definitely interested.
I'm on season 1 of DS9 now in my first Star Trek watchthrough, intermixing it with season 6 of TNG, and now I'm wondering if I should throw B5 in there too. Funnily enough, the episode I just watched, Birthright, Part I, aired the same day as the first pilot film, The Gathering. Just lucky timing, I guess, what do you think?
Also, I've heard the DVDs are poor stretched 16:9 transfers. Anywhere you can watch the standard 4:3 episodes in decent quality?