gID3 has a very nice user interface. Unlike other GUI id3 tag editors, gID3 displays a list of all the files in a directory with the tag info of each tag in one list making it very easy to use.
My goal is to make it the most usefull ID3 tag editor. I usually only make changes when I get feedback. So use it and give me some feedback.
Download: gid3-0.24.tar.gz
Debian package(depreciated):