I was thinking about getting headlamps for the family this Christmas so we can go XC skiing more often. I might just get relatively simple petzles or whatever for the kids, but for my wife and I I might actually invest a few $$ and get something that actually lights the trail. I was also hoping to find some that can be used with a headlamp strap and with a helmet mount for biking, as well as being bright enough for off road night riding when spring rolls around.

Is there any such thing? A head lamp that also mounts on a helmet and is bright enough for off roading?