Animated? Well, I suppose as a spin-off of some of the stories we never got much of in the series.
Sheridan and the Rangers
Lyta and The Vorlon
The Adventures of G'Kar and the Teep
The New Adventures of G'Kar (featuring Dr. Franklin)
The Prophetic Adventures of Valen and Zathris
The Grim Adventures of Londo Mollari and the Keeper
Mr. Garabaldi's Missing Hair
The possibilities are endless.