I have never been a Sci-Fi fan until I came across Babylon 5 years ago. This lead me to all the other genre shows I am watching today.
Babylon 5 is a monumental show, its idea envision and executed with brilliance by its creator JMS.
Its story arc spans all five seasons and it was more or less executed the way it was intended to.
The first season is the weakest of it, very cheesy and sometimes hard to get through (especially if you have never seen it before), but nonetheless has some important hints and foreshadowing of what is to come in later seasons. Nothing is a coincidence.
The cast is mostly great, the best being Peter Jurassik and Andreas Katsulas. But I also like Mira Furlan's Delenn.
Today the special effects may look cheesy and oudated, but when the show was first shown it was new to use this kind of CGI.
Anyone who likes Sci-Fi should have seen this show.