I recently started playing with a program called Chaoscope and got some nice results from it and therefore decided to make a couple of Multi Display-wallpapers (since I got two monitors).
I have tried to keep all of them pretty simple so the desktop feels clean.
All of your Nebula pics have worked out really well. It's hard to make a star background on the computer which doesn't look crap, yours is actually pretty good. Mixing it with the flowing line fractals is a great idea. Good work!
actually...of the ones I've uploaded that's my favorite...I use myself right now