Programs to install using "Synaptic Package Manager (spm)" or "Ubuntu Software Center (usc)"
(not in any particular order)

*Compiz Configuration Settings Manager (spm)
*Startup-Manager (spm)
*Thunderbird (spm)
*xiphos (usc)
*wine (beta) (usc)
*Dolphin (spm)
*Java by Sun (usc)
*Ubuntu Restricted Extras (usc - search for mp3)
*Emerald (spm)
*Fusion-icon (spm)

Ubuntu Tweak found: http://ubuntu-tweak.com/downloads
Play DVD's explained: https://help.ubuntu.com/8.04/musicvideophotos/C/video.html#video-dvd
Medibuntu: http://www.medibuntu.org/
Cairo-Dock, ONLY here: http://www.cairo-dock.org/ww_page.php?p=From%20the%20repository&lang=en
PySol - no longer in Karmic, will install however using Jaunty: http://packages.ubuntu.com/jaunty/pysol
Libertine Fonts: http://linuxlibertine.sourceforge.net/Libertine-EN.html