Okay, so it's only an online lair, but still, points for having one's own Evil Genius Lair. Visit it here: http://dzlsevilgeniuslair.blogspot.com/
Dzl is always working on crazy experiments and inventions that often go unmentioned on this blog because they are not part of a complete project; however, with a background in basic research, it's this type of geekery that leads to amazing projects.
Currently, Dzl is exploring flying robotics and has produced a number of fantastic videos, a flickr stream, (http://www.flickr.com/photos/geekphysical/sets/72157628440857877/) and is posting many times daily.
A great read for those interested in the behind the scenes look at what's going on in our geeky world.