This effect came out, while I was trying to achieve some other effect <img src="smileys/smiley36.gif" border="0" align="middle">. I think it's worth to post it.
<img src="https://dl.dropbox.com/u/26932498/dna_strand_demo.jpg" border="0">
Here's the .cap:
Hold left mouse button and drag it over the screen. Right click to reset layout.
Now with 'grow mode'! Just redownload the .cap.
edit: here's the thread with the blob_test effect. Made by quazi, improved by tulamide I think. -->
Download the fluid.rar there, it's a little more lower. One of the last posts of the first page.