I would not rush into getting it. It has some nostalgia value for hearing the old cast back together again (especially Peter Jurasik as Londo, who doesn't sound like he's aged a day compared to some of the others, especially Bill Mumy), and I have to say the new guy playing Sinclair is 100% on fire, but the story is all over the place and the story has a lot of JMS humour in it, which as we know from B5 itself is not the best. Zathras feels like a great 5-minute gag that's now been dragged out far beyond its lifespan.