I was 11 when I took this screenshot - Ubuntu 14.04 running on my very first (incredibly bad) PC. As I recall, I couldn't install Windows 7 without a DVD drive, and that was out of my budget :p
Pretty sure I had it riced out with the Compiz cube and everything.
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
Also miss it. I took a couple of years to warm up to it. Then when started to I really really like it, it went downwards.
I‘ve actually stopped using Unity a few month before Canonical abandoned it because with all the Gnome applications moving into a completly different direction it didn‘t feel consistent at all anymore.