Lately I haven't been very active (real life intrudes) and don't do much other than run Rick Bot (which mostly runs itself).
I have worked on the Japanese prefectures, towns and villages articles (see Wikipedia:WikiProject Japan/Gappei), created and helped with various geographical infoboxes (see Wikipedia:Geographical infoboxes), created List of Wikipedians by featured article nominations (and its siblings WP:WBFLN and WP:WBFTN - WP:WBFPC is a work in progress) and was for quite a while a regular responder at the Help desk and Village pump.
I shepherded Monty Hall problem through the Wikipedia:Featured articles process and was instrumental in the adoption of Wikipedia:Naming conventions (categories) as policy.