Movable Type client?

I need a better writing tool for Movable Type. Inserting the proper HTML tags into a paragraph really interrupts the flow of one’s thinking, and gets to be a pain in the ass after a while. The MT interface is great, but it’s geared towards writing HTML–not content. I could really do with a rich text editor that allows me to publish to MT. And I’m sure I’ve seen one of these puppies…if only I could remember where…

Alternatively, it shouldn’t be that difficult to knock one together myself. MT supports XML-RPC, so getting the rich text editing would be the hard part. The actual upload to the blog itself should be a caker.