For users without KDE or GNOME, there's only one way to write DVDs bigger than 1GB without paying for cdrecord-ProDVD and without using the command line - this is it. TkDVD is a Tcl/Tk frontend to dvd+rw-tools. It's not all that pretty but it's nicer than using the command line. I tried it out just now and wrote a DVD-RW without any trouble.
Created attachment 57226 [details] tkdvd-3.4.ebuild
Added (with slightly changes) to the portage-tree. Thanks for this ebuild!