Re: screenshot, here, look. really :\
no, the menus that you see are standard, there is no start button as such, you just click on the desktop and can launch programs from there.
the tranparancy you see on the4 menus is a standard effect, the wall paper I assume i just a pictuer.
ad program he's using is called Wget, it's just a download client, -nothing special.
As a desktop it does look pretty cool, better than most windows desktop with about a fifth as much effort needed o be put in.