In response to VR's request:

Primary commuter:
Headlight - Optronics QH-8CC driving lights. Small for cars, perfect for bikes.

Lamp - MR16 (pretty standard) Halogen, specifically Phillips Halotone Masterline ES (Energy Saver) 36 degree flood. This lamp provides 35W equivalent light for 20W draw.

Taillights - Two LEDs-R-Us 8-LED truck/trailer marker lights with reflex lenses that are NHTSA-approved reflectors even with the lights off. These lights draw something like .035W, almost nothing, even for two lights.

Battery - 5AH sealed lead acid.

Secondary commuter:
Headlight - Optronics QH-7CC driving light. Similar to QH-8CC, but chrome plated metal body rather than plastic.

Lamp - MR16 Halogen, Solux Natural Daylight 4700K color temperature (very white) light, 35W, 24 degree narrow flood.

Taillight - None on bike, Lightman Xenon strobe attached to Nathan reflective cycling vest.

Battery - 7AH SLA