You probably know by now that Ubuntu comes in all sorts of shapes and sizes. There's the stripped down Xubuntu for slower-performing systems, Edubuntu for kids and teachers, and Kubuntu with the more Windows-like interface.
But there are also community supported projects like Ubuntu Studio and Mythbuntu. These projects aren't sponsored by Canonical, the company behind Ubuntu. But they build on Ubuntu Code. While Ubuntu Studio features a slew of packages for creating and editing audio, video, and images, Mythbuntu is more of a Windows Media Center/TiVo alternative.