All you have to do is think in the realm of small space and the need for a super bright light. The applications are endless. Here"s one that you wouldn"t think of right away: coal mining. Miners could really use this in the shafts.
Yes, those white LEDs are getting really usefull.
Night time hunting for lost pets or even stranded motorists walking alongside the road are excellent applicational usages of the white LED's. 
Basically, any time its dark then? lol
set to a repeating pulse, this light could be seen by a satelite to find lost hikers or downed aircraft