The 5th season I found to be much more comtemplative. It's true that most shows go out with a big bang but I don't think Babylon 5 was quite that type of show.
Apparently the Russian second in command, Susan, had a pay dispute for the 5th season so they replaced her. Definitely replacing her was a mistake.
If you haven't watched Farscape, you definitely have to give it a try. They also just released it on blu ray which is what I got. What I loved about it is the main character Crichton. Every episode he was literally on the verge of a breakdown and episode after episode, you can slowly see him cracking. It's one of the few shows I wanted to rewatch right after watching the last episode.
