Anime
Sometime in 1998, I started hosting a collection of anime images that I'd collected from various BBSes and Usenet. Since that period, I've amassed many more, and have managed to become a top search on Google. There are also a few galleries I host on this server featuring some mediocre photography of a few different anime conventions that I've attended or staffed.
OpenNIC
In November 2003, I started the .fur TLD for OpenNIC, an alternate root system that is run as a democracy. Aside from a few server hiccups (and one server failure owing to a hosed disk drive about a year ago), it's been moderately successful. In early 2005, I picked up operations of the .geek TLD, under the condition that another one of the servers would pick it up. In 2007, I exited the project for personal reasons.
Furry fandom
As much as it is derided, I do participate in the furry fandom to a small extent. Participation has been more or less minimal aside from some of the social aspects (e.g., parties and barbecues) and helping to restart a convention in southern California. More of that information can be found on WikiFur, however.