Particle systems in Flash

Se procurarem no google têm muita coisa, até imensos componentes que é só usar, nem é preciso escrever código....
http://www.levitated.net/bones/mxComponents/examples/FMXComp-particle-trace.html
http://www.valveblog.com/2006/07/flash_9_particl.html
http://www.actionscript.org/resources/articles/125/1/Simple-Particle-Effect/Page1.html
http://www.zeuslabs.us/demos/particles/flames.html
http://rogue-development.com/experiments/pulseParticle.swf
http://lab.andre-michelle.com/bitmap-particles-2
http://lab.andre-michelle.com/instable-connections
http://lab.andre-michelle.com/bitmap-particles