I agree with Mechbgon, I think the videos and our real world observations prove that reflectors are not anywhere near as good as lights, however use them as an addition to lights as an additional aid. Anything you can add to make yourself more visible is a good thing.

The thing you all still need to realize, which I'm sure most of you do, is that night riding needs to be done with same high degree of alertness and defensive riding as you can muster and don't rely on lights and reflectors to protect you. If a person hits you while all lit up and reflectived up they would have hit you in broad daylight because they are either dumb, blind, or unattentive, so you need to ride defensively. Night riding is very fun to do, it puts a different perspective on your world around you, and it's cooler then during a 105 degree day!