Duane Johnson has made several cool improvements to the Rails bundle which are shown off in this screencast.

These improvements will be available out-of-the-box in TextMate 1.5.1 but you can also grab the updated bundle now.

Very advanced behavior adjusting customizations can be done in a matter of minutes by making good use of scope selectors and language grammars. This screencast shows a few of these.

Basic calculations from inside TextMate including how to add/subtract numbers in column formatted text, and how to do various other column related operations.

Four ways to efficiently have HTML tags inserted into your document without having to type the angle brackets or type both a start and end tag.

Also shows a bit of multi-line editing, in particular dealing with list items of varying lengths.

Part 2 of demonstrating features specific to Objective-C/C++.

This time: documentation lookups, reformatting method signatures, and auto-insertion of brackets, alloc/init, and missing include lines.

The blogging bundle allows you to post or update blog entries, preview them, upload accompanying images, and supports the various humane text formats in addition to plain HTML.

This screencast shows how to set it up and demonstrates fetching, posting, and image upload.

First a short intro to how you can search the bundle items.

Then a few actions related to turning book titles into canonical Amazon links and/or making words/phrases links with Google’s “I Feel Lucky” but without using a web browser.

James Edward Gray shows how to apply unit tests to solving Ruby Quiz #84: Generating Pascal’s Triangle. In the process he also demonstrates a lot of features from the Ruby bundle and explains conventions and rationale behind them

Various useful key equivalents and text transformations for HTML, amongst others how to obfuscate email addresses in your web page.

The new system in TextMate for presenting dialogs allows you to create a custom interface in Interface Builder and then ask TextMate to present it as was it native. This is without writing any code at all.

Jacob Rus demonstrates the basics of the AppleScript bundle, including running scripts from within TextMate, adding basic user-interactive dialogs, and looking up AppleScript documentation.

Jacob Rus shows how to integrate TextMate’s AppleScript bundle with Script Editor, including installing the Edit in TextMate input manager, saving compiled script applications and droplets from Script Editor, and quickly opening applications’ scripting dictionaries.