NW, have you never seen Babylon 5? If you haven't, you're in for a treat. In my opinion it's the best SciFi series ever made. Revolutionary, especially considering it first aired in 1992. It was the first TV show to use all CGI graphics for the space scenes, and while they're not great by today's standards, they beat everything else in their day.
It's important to note you shouldn't start with the first episode, there's a pilot movie you need to see first. There are actually 6 box sets, seasons 1-5 and the movie set (there were 5 movies, excluding legend of the rangers). If you've never seen the show before, here's the order you should watch things in:
Pilot Movie 1 - "The Gathering" - Movie Set, Disc 1
Season 1 - "Signs and Portents"
Season 2 - "The Coming of Shadows"
Season 3 - "Point of No Return"
Season 4 - "No Surrender, No Retreat"
Movie 2 - "In the Beginning" - Movie Set, Disc 2
Movie 3 - "Thirdspace" - Movie Set, Disc 3
Season 5 - "The Wheel of Fire"
Movie 4 - "River of Souls" - Movie Set, Disc 4
Movie 5 - "A Call to Arms" - Movie Set, Disc 5
Spinoff Series - "Crusade" - (only 13 episodes made)
Movie 6 - "To Live and Die in Starlight (Legend of the Rangers)" - Single DVD Release
I don't know your finances, but you can pick up (from amazon.com):
Babylon 5 - The Complete Television Series (5 box sets) for $220.99,
Babylon 5 - The Movie Collection for $47.99,
Babylon 5 - The Legend of the Rangers for $14.99,
and
Crusade - The Complete Series for $47.99.
That's all of Babylon 5, every episode, movie, and spinoff, for $331.96 (free shipping), not a bad price if you have the cash.
But most importantly, if you haven't seen babylon 5 before, DON'T WATCH IT OUT OF ORDER!!! You'll ruin the experience! Watch it in the order above if it's your first time

. And don't get discouraged by the first season, while there are some great episodes in that season, it is kind of a slow start to the show, but things REALLY pick up in season 2, in a big way.
P.S.
And don't forget, later this year marks the return of new Babylon 5 material with
Babylon 5: The Lost Tales, 2 Direct-to-DVD short movies coming this fall.