Ars Tenebrarum
Most, if not all, of my focus on this blog has been oriented towards OSR and retroclone content, and will likely remain so. However, it is not my only wheelhouse.
Case in point: Ars Magica! A game system for which I have a lot of respect, from its setting to its magic system; I find it to be a terribly compelling game.
Another system in the same vein, though one I have a good deal less respect for, is the World of Darkness and its games, such as Vampire: The Masquerade and Werewolf: The Apocalypse.