There's a cool free plugin for AE, it is Sinedot. It's very useful to create something organic flow or waveform, vectorscope kinda thing. I don't know what you guys call it, but it is very handy. I tried some settings to create backgrounds or graphics elements. But in this video, I put also trapcode particular elements, I just can't leave it alone..*sigh*..Well,Be sure to play with Sinedot..Cheerrss :D