Here's a couple of shots from a grass fire we had in Boulder earlier this month. These are fairly long exposures, taken at night with a 17-50 on a tripod mounted 40D.
The shots were taken about 50 feet in front of my house looking North.
The closest fireline in these shots was around 2 miles away. The fire was contained before it starting burning houses in the city, but itt came within 20 feet of a major subdivision. It makes you really appreciate firefighters.
The fire burned roughly a thousand acres of open space but only 1 house was lost.
This was first attempt at this kind of a shot so they may not have a lot of technical merit, especially since I was standing in a 50 mph wind.
However, the pictures do give you an idea of what you do NOT want to see from your front yard.
EricL 
