Maybe it’s just me, but I thought this was a hilarious parody …
I have to confess it looks really really nice, and is very quick to flick between desktops using CTRL+SHIFT and Left or Right arrow. You can change the transparency of the cube.
The only thing I don’t like about it is that moving items between desktops feels waaaaay more difficult than it should be.
It’s freeware and you can download it from here, if you really like the author accepts donations.