Brad Choate has released Textile 2. The first edition of Textile was a super plug-in for MT, and this one looks even better. In fact it looks like substantially more than I need. Textile 2 does, however, fix the thing about the first edition that most bugged me: now it's easy to use textile commands for multi-paragraph blockquotes.
If you blog with MT, you really should get this plugin. It's very easy to install, and it does provide all sorts of markup shortcuts for formatting your text.
Thank you Mr. Choate!