Another thumbs up for Ubuntu from me too...
The combination of Ubuntu, OpenOffice, InkScape, The Gimp and Firefox immediately covers a huge area of computer uses.
Installation is: bung a CD in, reboot, follow simple prompts and then it's up and running.
The easiest way to get DVD playback, miscellaneous video/audio CODECs, Flash plugin, NVidia driver, etc, is to install Automatix. This requires the one-off editing of a text file and running of a couple of shell commands (the modified contents can be copied from the web browser window and pasted into the text editor and shell windows easily) and from there, it's all point and click. Information is
here and
here.
Have fun!
- Ali