I ride at night a lot and actually like it. As a matter of fact it has some advantages over daytime commuting, specially regarding the less amount of motorists. The gear I use for night riding is a Sergas 5-Whiteled frontlight, a Cateye 3 red leds backlight, the bike's original reflectors and some reflective tape sewed to my commuting jacket and backpack.
That's it and I can assure you that it is much more than enough.
Take care,
Ricardo from Colombia