I just discovered a cool new WYSIWYG editor for web browsers called TinyMCE. It is entirely driven with JavaScript—no special plugins or applets required—and it replaces <textarea> tags on teh page at runtime, so it integrates seemlessly into existing apps while non-compliant browsers continue to show the textarea.
With about 5 minutes of work I was able to insert TinyMCE into my WordPress admin page. Did it work? This post should tell you that.