I have created a module which integrates the Ekit HTML editor (see http://www.hexidec.com/ekit.php) into Drupal. Ekit itself is a Java applet which will be loaded on demand for every textarea in the Drupal administration area.

You can find the module and some comments about the installation at http://1stein.org/node.php?id=142. Keep in mind that it is not tested very much, just in my personal configuration. So I am interested in work reports and patches to make it work elsewhere.

Schimmi