Okay so this was one of my first tutorials that I wrote years ago while using the Shad0wSt0rm alias. After thousands of comments on dA, I'll go ahead and get this out of the way now: You can attempt to use my settings on the Distort>Wave filters, but you're better off just playing with them until you get the effect we're looking for, seeing as the outcome of the settings is going to depend on the placement of your 'cubes'. That being said, you will also need the 3D Transform filter which does not come pre-installed in CS or above. If you have a legitimate copy, this should not be a problem as you will find it on the Extras CD. If not, I may be willing to PM a copy to those who need it in exchange for some spiffy rep points or something.
Enjoy.
Oh and comments always appreciated.