A debian package a day site - They are currently looking for contributors to write articles and editors
How to install Windows Media Player 9 and 10 on Linux using wine - very detailed with screenshots.
irssi themes - Never played around with irssi themes, it's quite fun and easy to set up. BTW irssi is a irc chat client. Just download the .theme file and place it in your ~/.irssi directory then start irssi. Once in irssi, type '/set theme theme_name.theme' and that's it. This site has tons.
Create a video of your desktop activity. This isn't in the Ubuntu repos so you will need to install manually.
Finally, strigi. Unlike most desktop search tools, this one uses very little resources. In Ubuntu, 'sudo apt-get install strigi-applet' to install.