I'd have to say the Medusas was very well done, one of my favorites.
I think a Slayers to Familiars/Mounts (as I stated earlier :) )would be cool...several pdf mounts and familiar books are floating around.
It's kinda funny that this post came up. I was tellin a GM of mine the other day that I'd like to see someone pick up Aliens. The old game was pretty damn fun. Maybe some form of Slayers Guide to Familiars?
