All sorts of good ideas here...

My DLG bit the dust awhile back when I got in a hurry hooking it up and the power cable got hooked up in the chainring... haven't gotten around to replacing it just yet... ;-(

I use TireFlys on my valve stems, and get good side visibility with them... and wear a reflective vest that I found at Gander Mountain back the end of the summer. We taped the night ride at the LCI seminar held up in north Arkansas the weekend before last, where pairs of riders went up a stretch of dark road for a couple hundred yards then turned around and came back, while we watched them in the dark, then in the low and high beams of a car positioned there for that purpose. I was surprised to see how bright one rider looked -- sort of like the mothership from Close Encounters -- and when he turned around at the end I saw the TireFlys... it was me!

I still have light lust for a set of Dinottes, though...