D you mean like this: (1)
Or like this: (2) 
I made them from music videos - you need them in avi or mpg format for PSP/Animation Shop and mov for Photoshop/Image Ready.I think you use PSP..?
Idk where to find good vidoes, but once you´ve got one, open Animation shop, go to file>open, and choose a random amount of frames. I usually take around 500, but if your comp is slow, take 200-300 frames.
A sncap if it helps.. Then just select all the frames, crop, resize, get rid of useless frames ... Well, whatever you wish to do with the thingie. Save as gif.
This is how you make the first avvie..
For the second one, it´s pretty much the same, just a few adds.
When you save as gif, resize & crop the avi/whatever gfx your making. Make it 4 or 5 times smallr than the original one.
Save as something else.
(you have the bigavie.gif and croppedavie.gif, for example)
Open them both, select all the frames
Then with the Arrow tool drag the frames from the smaller av to the bigger one... and that´s about it.
Sorry if I kinda suck at explaining, heh... Hope to have been helpful, though
~ Elfe