Clear your desktop of clutter with Fences by Stardock. (Linux: see KDE4 alternative)
Limpia el escritorio de amontonamientos con Fences de Stardock (LINUX: ver alternativa de KDE4)
To date, this is the nicest operating system icon set I've ever come across, and I've never even seen icon sets for some of these desktop managers such as the Gnome and KDE ones.
Also included is a globe, an icon for Windows Media Center and more.
Okular combines the excellent functionalities of KPDF with the versatility of supporting different kind of documents, like PDF, Postscript, DjVu, CHM, and others.