Ted and GTK2
I've always thought that Ted was quite a good
wordprocessor: it is fast and its handling of the RTF
format is almost perfect. However, many users (rightly)
complain that Ted, which is Motif-based, looks odd on a
modern desktop. There are good news for them: as of
version 2.16, you can successfully compile Ted with
GTK2. It looks much better now!
xfce4, a complete redesign
If you have tested Xfce before and didn't like it, it's time to give it another try.
Version 4 is a complete redesign. It's as fast and stable (none of its components has ever crashed on me or posed even a minor problem) as the previous versions but this time, it looks gorgeous (gtk2 + better artwork). It stays out of the way and in the same time is very easily configurable. Everything, from icons to menus to workspace names, can be quickly modified by a couple of mouse clicks. You'll also discover great features along the way, such as a clever use of the scroll wheel to shade/unshade, change workspace, modify the volume.
Xfce4 is a lesson in smart design and a dream come true: a stable, well supported, featureful, nice-looking, radically unbloated desktop environment. Long live the Xfce team!