Calum wrote:wait, so it's not a macintosh with aqua on it? i will have to look into this karamba thing...
Nope. The bar is called SoyBar and you can get it
here. The wallpaper can be also be found
here. Note that all of the icons on the bar are functional and each one of the opens the respective Linux app. For example, the Mail icon which opens, um, Mail in OS X opens Evolution in Linux and so forth. If you don't know where to get Karamba from, I can point you to some addresses.
BTW, I forgot to mention that the original KDE bar is hidden in this one as well as all the desktop icons.