I'll chime in with Brightnorm's definition too.
To most a flashlight is a basic item without detailed regard to runtimes, light output, throw, spill, durability...blah-blah. When the light dies, it means replace the batteries or bulb.
I'd say if you know the specs of a couple lights, you are likely an addict. /ubbthreads/images/graemlins/takeit.gif