I'm in the process of making a web page about my bike light project, but until that's done, here's a few pictures of the finished product. It was completed last Sunday so I was able to ride in to work 4 days this week! It's working great, no problem with burn time whatsoever. I even rode one day with 40watts burning all the way home and it wasn't dimming at all when I got there.
One minor problem with the lens popping off over some bumps but luckily I was able to recover the pieces (lens, rubber seal and housing) and put it back together. Nothing that a little electrical tape won't fix.
Attached are the front and rear views, the NiMH battery pack, and the $6 Wally World seat bag that the battery fits perfectly inside of.