cd-paranoia, dvd+rw-tools, nautilus-cd-burner, wodim --- someone without a CD drive can be desktop user.
fortune-mod --- not really critical
gnome-pilot-conduits --- I don't have a PDA
almost all printer-related packages (foomatic-*, pnm2ppa, cupsys-*) which are not critical for users without a printer.
Other items for the list:
cd-paranoia, dvd+rw-tools, nautilus-cd-burner, wodim --- someone without a CD drive can be desktop user. conduits --- I don't have a PDA
fortune-mod --- not really critical
gnome-pilot-
almost all printer-related packages (foomatic-*, pnm2ppa, cupsys-*) which are not critical for users without a printer.