matt you win a trip around the world and $10,000.., just kidding
a spot light with the region decay tweaked and yes, fog! (some MIGHT have thought it an area light!)
I dont know about batman but i tried to get dust floating through it but havent worked it out yet.., I saw a tut on this on the net a few days ago and thought Id give it a go from memory.., but forgot how the dust is done??
batman's next...
take it easy and life will be easy