Anime in General
So what is your favorite anime series that left you hanging and was 2 seasons or less?
Too many to list, but a few that come to mind right now:
Umineko no Naku Koro ni - reading the manga now instead, sound novels are too long
Pandora Hearts - I was reading the manga before watching the anime, but damn if the manga doesn't deserve a better and actually complete adaptation
Spice and Wolf - reading the novels now
Legend of the Legendary Heroes