I have a couple of PCs running Ubuntu Linux for my kids. The installation is easy and hassle-free, but don't include the much needed Flash and Java support for browsers for my kids to play games. Enter EasyUbuntu. One install does it all:
EasyUbuntu is an easy to use (duh!) script that gives the Ubuntu user the most commonly requested apps, codecs, and tweaks that are not found in the base distribution - all with a few clicks of your mouse.
EasyUbuntu is so easy to use in fact, that even your grandma could be playing encrypted dvds, streaming Windows Media, and sporting the latest Nvidia or Ati drivers in minutes!
One word of caution -- don't install Nvidia or Ati drivers unless you feel you really need them. I installed them and then my xserver GUI wouldn't load. The other installs worked flawlessly.
Get the software from EasyUbuntu