Linux wouldn't look so cool without the graphical user interface engine that runs underneath it. That engine is called X11 Window System. X.org Foundation, keeper of the X11 scroll, just released its latest version X11R7.2. Check it out:
X11R7.2 supports Linux, BSD, Solaris, Microsoft Windows and GNU Hurd systems. It incorporates significant stability and correctness fixes, including improved autoconfiguration heuristics, enhanced support for GL-based compositing managers such as Compiz and beryl, and improved support for PCI systems with multiple domains. It also incorporates the new, more extensible XACE security policy framework.
X11 is the windowing system used by practically all *nix-based distributions. Heck, even Apple releases X11 as an optional install with Mac OS X. So, fire up Synaptic or apt-get, or whatever application package management software you use, and get the latest and greatest version of X11. What are you waiting for?