After a long dry spell (there was a two-month period where I wasn't gaming at all), I've suddenly got more gaming than I know what to do with, and I'm DMing again.
I'm still playing in Trollsmyth's Labyrinth Lord(-esque) chat game, and now I'm running Souls For Smuggler's Shiv, the first adventure in Paizo's Serpent's Skull Adventure Path as a solo game for him. We alternate who's running or playing, and we've been playing between 2 and 3 times a week.
Tonight I'm running another Pathfinder solo session for Dangerfox, also in online chat. This may or may not turn into a regular game.
A few weeks ago I played Old School Hack with Risus Monkey, which was great.
There's some talk of a Mutants & Masterminds game amongst those members of the high school crew who are still in the area. I'm working on a character, but I'm not sure yet whether it'll actually happen. Several people in that group have highly irregular schedules, and it's been several years since anyone other than me ran a campaign.