I was always searching for a GUI tool that make me happy when converting cd formats (e.g. avi divX to VCD, SVCD, etc… emule without this has no sense). Avidemux can do that and a bit more.
apt-watch is a gnome applet use for the same task as famous redhat-update. It notices you about new packages in your stable,unstable or security debian repositories. I have to play with it to manage the download and install of packages too in ubuntu, since i can’t run it with root user (ubuntu use sudo for root always…).