Well, since most of this forum is all sigs / avatars, I'll teach a quick fun way to make a pretty cool looking picture through Photoshop.
I use Photoshop CS for the following tutorial, no other tools required.
Estimated Time to complete: 5 minutes.
First open a new image, I started with 800x600 and a black background:
Next I rendered a lens flare, placed it in the top left corner at 100% brightness:
Then, do a chrome filter, detail 10, smoothness 0:
Now, duplicate the layer, and set the blend mode to "Lighten" :
Duplicate the layer again until you have a total of 6 layers, and apply a Wave filter to your first layer:
The settings for your wave filter should be as follows:
After that just do the same thing for 4 of your 6 layers, each time click Randomize at the wave settings panel. On your last two layers, apply a Twirl filter:
The settings for your twirl filter on one the first your last two layers should be 150, and on the second of the last two layers should be -150:
Now flatten the image:
Adjust the Hue/Saturation on the newly flattened image:
The settings can be played with here, but I made this one blue with these settings:
And that should bring you to the final image:
From here you can play around with different effects, Gaussian Blurs, sharpening, etc.
This is very basic and just done to give people more of a grasp on what exactly photoshop can do.
Hope it was amusing.
Edit: The whole thing took me 10 minutes to complete, write this post, edit the pics for the tutorial, and talk on AIM / Xfire / MSN.