Edited entry, now with a better bunch of arrows.
Thanks to Brandon Riza for inspiration.

http://www.vimeo.com/3323348/

Here's a lil' playthingo from Jeremy Birn's Lighting Challenges...#1 - Fruits

Just playing a bit with afterburn, learning this and that...


here's a link to a higher res : http://img517.imageshack.us/img517/...rnadojoetw2.jpg

Here's the composited version. I rendered out the various elements as separate passes and applied glows and motion blur to some of them.
It's fully changeable, so you can make it slower/faster, you can change the way the smoke rises and pretty much anything else.. and the pflow tree is still quite simple.

http://www.youtube.com/watch?v=tunksogIJhc

p.s. I need a better video host. Youtube transforms any good looking detail in a damn ugly compression artifact.

Here's a rendered version of the same effect, without any post production.
That's where most of the effect will come to look good, so I'm posting these just to show some progress.
http://www.youtube.com/watch?v=yZMfGgWXj6c