Call of Cthulhu since 2nd edition, old school Deadlands and L5R Bounty Hunter, playtest team for Warlord CCG, Malifaux Henchman, Dungeon Master for 3e Living Greyhawk and 4e Living Forgotten Realms events.
Current games
D&D 5E (Forgotten Realms and Eberron), 7th Call of Cthulhu (Modern, Wild West, Gaslight, 1920s), Warhammer 30k Horus Heresy, 40k, Shadows of Brimstone. I run a Warhammer/D&D game club for students at the middle school where I teach.