See the text file at this URL for a set of tips for how to customize the administration forms of MovableType for slightly easier blogging. It explains how to make the Main Text Entry control on the Edit Entry form wider and longer and how to make the Title control wider. It also explains how to make the titles in the List and Edit Entries form wider.

If anyone else has customizations that they do to the admin side of MT then send them in and I'll consider them for inclusion in this tips file.