for me it's
SureFire flashlights, specifically my 6P and G2, the 6P i will have either the P60 65 lumen lamp or P61 120 lumen lamp in, depending on situation, the G2 has a G&P 3 watt Luxeon LED lamp in it, instead of the stock P60, for longer runtime
my Inova X5 LED flashlight, built like a tank, completely waterproof, able to withstand 3000 pounds of crushing force, 20 hours runtime, the thing's practically indestructible
my Fenix L1 1 watt Luxeon sngle AA flashlight, long runtime on a single AA battery, and a good compromise between flood and throw
Mossberg Model 500 shotgun, built to police-spec and built to take a beating, even though i treat it very nicely
Apple Computer, specifically, my PowerMac G4 Mirror Door tower running 10.4.2 and 10.4.4 (gotta love dual hard drives....
my Nikon F4s 35MM SLR, it's *never* failed me, or taken a bad picture
similarly, my Mamiya RB67 Pro S 120 camera, fully mechanical, rock solid reliable, no batteries, no meter, just a bunch of gears, springs, switches and glass....
and, of course, my Spydies....