Every night I take a walk with my mom and my dog, and I always carry my SureFire LX2 with me. I usually just use it for lighting up any dog waste I might step on, or just to light up the sidewalk. I thought maybe I blew almost $200 on a light that could do the same job as a cheap D-cell light; however, one night proved me wrong. My mom was walking in the middle of the road, and there was a sports car that didn't have its headlights turned on. The car sped up and almost crashed into my mom until I lit up the car with 200 lumens of blinding light and yelled "STOP!" That night my LX2 literally saved my mom's life.
See the LX2 flashlight: