Video:
https://www.youtube.com/watch?v=kzUa4Sqcqd0
I played around a bit with the Cycles Volumetrics and it looked pretty cool.
Information:
Rendered in a 2.71 pre-release build.
Domain Resolution: 128
Smoke High Reolution: 1
Emitter: Particle System (100000)
Rendered in Cyles with 200 Samples
Volume Sampling:
Step Size: 0.1
Max. Steps: 512
Looking forward to hear your opinions 
