Craig Drummond has released a new theme and "engine" for GTK programs that provides something many people have been looking for: a common look and feel for KDE and GNOME applications. While Red Hat's Blue Curve attempts to do something similar, Mr. Drummond's Geramik is the first theme implementation to provide smooth integration between environments. Read the full story at OfB.biz.
[Ed: What about usability issues? If KDE and GTK+ apps don't act the same or provide the same set of functionality in practice, should they really look the same? Wouldn't that mislead the user?]