I am currently running a 1st edition AD&D campaign called "The Dark Ages." It's hosted on Obsidian Portal (link). I have two tabletop groups running in this campaign as well as a new online game through Google Wave.
This campaign is styled on the "West Marches" sandbox style of play first documented by Ben Robbins of Ars Ludi. It's a great approach and my first year has seen some interesting developments.
I have an RSS feed set up for my campaign's latest updates, if you'd like to see what the campaign is all about. I know that I'm trying to keep the 1e flame alive!