I have too many to list but here are my EDCs and FAVorites:

Work lights (with/on my person):
-Streamlight Stinger (rechargeable - 10 years old and still going strong)
-Streamlight TL3-LED (Back-up light, carried in my patrol bag, not fond of the bluish tint of the light but has GREAT battery life and is a solid light)
-Streamlight M3 tactical light (mounted on Glock 22)
-Streamlight M3 tactical light (spare, carried in patrol bag)
-Streamlight stylus (Green LED, 5 years old and have never changed the batteries, I use this light all the time)
-Inova microlight (on personal keychain, keeps turning on by itself while in my pocket, will replace with photon freedom light VERY soon)

Vehicle lights:
-Streamlight SL20 (rechargeable - at least 10 years old, heavy but works great with lots of light)
-Streamlight Scorpions (one in each vehicle, don't like the rubber grip it attracts too much dirt/dust, will soon be replaced with yellow Surefire G2 nitrolons)

Camping/Preparedness:
-Rayovac 'sportsman floating' fluorescent lantern (8D cell batteries - heavy but good light and is weather/water proof, two brightness settings)
-Energizer 'folding lantern' (4D cell batteries - I can't say enough about this light! It has two brightness modes plus an LED 'night light', can be used as an area light or directional light with built in reflector. For about $12.00 this is the best light, I absolutely feel like I got more than my monies worth, at about 1/3 the weight of the Rayovak lantern above, this is my primary power is out/camping in good weather light. Battery life is advertized as 20 hours on high/40 hours on low power. It is available at Target/Home Depot)
-Energizer LED folding lantern (4AA - small, light weight, wish it had been build like it's bigger brother above, however there is no built-in reflector and can't be used as an area light. Battery life advertized at 200 hrs on high setting and 400 hours on low setting. Bluish tint to light, but is an OK emergency light source for $6.00 and has good battery life)

Lights I'm looking to purchase soon:
Surefire G2 nitrolons
Photon Freedoms
More Energizer 'folding lanterns'
ARC AAA-P
Headlamp of some kind (have not done any research)

Etc., Etc., Etc., Flashlights are a favorite gift between the MEN at Xmas time, sooo..................................