Yeah, this is fun!
Don't do as much night riding as I'd like, but biking over to friends down winding lanes, or bumpy, dark singletrack, it's great fun to turn the lights off and blast through sections, knowing what's there, but not seeing it.

Excellent stuff :D

edit: Just remembered some sketchy night riding I did with a friend: I didn't have any lights, so followed my friend as close as possible through lots of winding paths in the woods. It wsa fine until he turned a corner, and suddenly the path in front was pitch black. Great for reaction times.
( LemonEntryMyDearWatson This time, Moriarty, the hand is on the other foot, Thu 23 Jul 2009, 18:33, 1 reply)

Petzl
I had one of the headtorches with the separate battery pack, and the cable was a bit dodgy, so it would regularly plunge me into darkness just in the middle of a bit of technical singletrack. Owch.
(potato123, Mon 27 Jul 2009, 17:07, closed)