I've learned from Jean Chretien and now keep my angle flashlight within reach while I sleep, just incase I need to crack a burgler on the noggin
I've never seen a flashlight that will light up a target at 100m, but one might exist somewhere. You could always hire a midget to walk around with you with one of those giant police spotlights on his back. Then you'll always have that uber-bright, long distance light that no man should be without ;D
Cheers,
Pinky
P.S. Maybe check out some of Surefire's stuff. Not the cheapest, but I've never heard a bad word about 'em.