When I hike, I always carry a headlamp or flashlight with me, and sometimes both! It is one of the 10 Essentials after all, and the last thing I need is to be caught in the dark without a source of illumination.
I just wrote up a review of my Pelican MityLite, a small and lightweight flashlight that has a superb ability to provide a tremendous amount of light.
Check out my review of my Pelican MityLite 1900.