I looked but there are no B5 threads for at least 4 pages and this article was a very good one, outlining what happens when in B5. First, a non-spoiler episode list of key points in the series: http://jasonshankel.net/wiki/index.php?title=The_Essential_Babylon_5 and here is the actual article on IO9, which has heavy spoilers. http://io9.com/5876320/everything-you-need-to-know-about-babylon-5 While he does take a few shots at the show's weak points, he's obviously a fan and his look back is pretty well thought out as far as which episodes were key to what plot points. Enjoy!