Very cool! It seems like something you could just sit and shoot for hours seeing all kinds of cool results. Would make an awesome desktop wallpaper too!
my set up was pretty basic. i will put a picture up soon, i just need to put it back up. but yeah its cool doing this its easy and fun, the problem is the room getting filled with smoke.
2 is the best out of the three, just because you can actually see the beginning of the smoke at the bottom. the blue light coming through the smoke works well. perhaps another subject in the frame would ad something?