As reader of Planet Ubuntu might now, the nice porgram vrms from the self-named packed shows how (un-)free your system is. Mine:

21:53:49 blizzz@xara:~$ vrms

Non-free packages installed on xara

fglrx-modaliases Identifiers supported by the ATI graphics driver

latex2html LaTeX to HTML translator

nvidia-96-modaliases Modaliases for the NVIDIA binary X.Org driver

opera The Opera Web Browser

rar Archiver for .rar files

selfhtml German HTML reference and tutorial

sun-java6-bin Sun Java(TM) Runtime Environment (JRE) 6 (architecture

sun-java6-jre Sun Java(TM) Runtime Environment (JRE) 6 (architecture

sun-java6-plugin The Java(TM) Plug-in, Java SE 6

umtsmon Dieses Paket beinhaltet den UMTSMonitor fuer o2.

unrar Unarchiver for .rar files (non-free version)

Non-free packages with status other than installed on xara

linux-restricted-modules- ( dei) Non-free Linux 2.6.28 modules helper script

Contrib packages installed on xara

flashplugin-installer Adobe Flash Player plugin installer

flashplugin-nonfree Adobe Flash Player plugin installer (transitional pack

msttcorefonts transitional dummy package

ttf-mscorefonts-installer Installer for Microsoft TrueType core fonts

Contrib packages with status other than installed on xara

openttd ( dei) reimplementation of Transport Tycoon Deluxe wi

12 non-free packages, 0.5% of 2369 installed packages.

5 contrib packages, 0.2% of 2369 installed packages.

It could be less without any problems, since i my notebook is intel based so the auto installed nvidia- and ati-stuff are meaningless. Didn't know that selfhtml is unfree, and well, i even forgot that i have those MS TT fonts installed.