I came across a new rich text editor in a project recently where I just needed some simple lists/bolding/color capabilities. Its super easy to use, you just reference the .dll and add it like any other server control to your page. The nice part is everything is compiled into the .dll, you don't have to add images or scripts to your project to support actions or tool bars. I didn't get into the adding of images or the more complex stuff though. You can also specify the tool bar look and feel from a few different office type looks. Oh, and its cheap!
Anyway, here is the link.
http://freetextbox.com/default.aspx