I use TextMate almost as much as QuickSilver, and, like QuickSilver, probably make use of about 5% of its features. But now, a new book coming in February (get the Beta now!) promises to unlock the Holy Grail of this immensely powerful and award-winning app. Oh, and if you haven't checked out soft-spoken developer Allan Odgaard's screencasts, you're missing out on one of the best things about TextMate. Highlights:

• New Dialog System for Commands (watch): an amazingly simple way to build interfaces that hook into external data and scripts (something I should consider for WebKit on Rails)
• TextMate Widget Creator (watch -- by Andy Herbert): how to build Dashboard Widgets in TextMate that are driven by shell scripts
• All time favorite: Blogging From TextMate. (watch): shows how you can use TextMate as an uber-streamlined blogging tool. (I hope the guys at Flock are paying attention!)