I can't think of anyone else off the top of my head who I consider a real alpha geek, but Rich blows my mind on a constant basis with clojure and how he's doing

I can't think of anyone else off the top of my head who I consider a real alpha geek, but Rich blows my mind on a constant basis with clojure and how he's doing things there. Not just the technical work, but his taste in design is impressive.