Very nice!
What font are you using in the screenshot?

I believe he is using Liberation Sans from the Liberation suite made by redhat. They made a Sans, Sans Serif and a Mono font that look better than Arial, Times and Courier If you have Ubuntu or Debian you can install with:

sudo apt-get install ttf-liberation
Or if not you can download and extract them to the hidden .font folder in the home directory. (in nautilus View->Show Hidden Files)

https://www.redhat.com/f/fonts/liberation-fonts.tar.gz

What Metacity or Emerald theme is that? I've seen it in so many screenshots but can't find a download. :( Also is there anywhere i can get the default 'classic' theme?

Hi, I like your Wallpaper, were can I get it?? Thx, Air

I've the same problem. What metacity theme is this? Where can I find the classic theme?

FOUND THE METACITY THEME! Gilouche Squared on GNOME-Look: http://www.gnome-look.org/content/show.php/Gilouche+Squared?content=7578...

Correction. Above mentioned theme is not exactly as pictured, but it's very close! The border is missing a pixel in width, the title bar is a few pixels too high and the close, the title is center aligned rather than left-aligned, and the buttons and title have a border around them. :(