I am running a 2010 17" MacBook Pro, yet when I installed kubuntu 13.04, it looks nothing like this picture. Now, I have been using Linux for some time, but haven't done a whole lot other than being a user. I'm kind of at a loss at how to get my bottom task bar to look like that. I used KDE in the mid-2000's and it worked a lot better right after installation.
When I run the live-DVD or installed it to my linux partition, it is pretty much a blank screen with a nice wallpaper picture and the box that said 'Install kubuntu 13.04' in the live-dvd that I can understand, but it is empty once you install it. Now, I was able to figure out that you need to change the desktop style and then I was able to figure out that you need to add widgets to the task bar on the bottom... why the basics aren't pre-loaded, I'm not sure...
I was able to apt-get VLC in the live-dvd session, but I haven't been able to do it once I installed it. I'm not sure if my internet connection is reliable enough, and I can't really tell. It was quite hard trying to figure out how to connect to different wi-fi networks. And I can't tell if it is working or not easily. Linux Mint kind of shows you if you are connected or not and if it has become disconnected.
I will say that kubuntu 13.04 has improved on ubuntu 12.10, 12.04 and linux mint 14 since it works again with my 37" HDTV external monitor.
I still think more focus needs to be done on the boring task of getting stuff to work on all of these random setups than making new designs, new features, and new programs.