Show how to make use of i.e. Modernizr and such frameworks to best fit content on display/resolution and devices the visiter/user use to browse the web site.
Make use of i.e. Twitter's Bootstrap and such frameworks to save time for styling and positioning of content.

Walk through build a simple web application with compojure and ring.

Show how to contribute to a project, workflow for forking, pull requests, etc

Provide an option to download new episodes through iTunes for annual subscribers (like how screencastsonline.com does). I suggested this idea through emails and twitter several times and followed up since May 2011, but seeing that it's not done, I wanted to put it out here publicly.

Providing a way to download through iTunes means easier updates for annual subscribers without having to go to individual product pages to get new episodes.

Part 1: ActiveRecord vs. DataMapper. This would be a quick overview of the two patterns as well as the implementations "ActiveRecord" and the "DataMapper" code that can be used with Rails.

Part 2 DataMapper in Depth: PeepCode already has plenty of screencasts on ActiveRecord. This screencast would be for those who've decided that DataMapper makes sense for one or more of their projects and are moving on from Part1 (above) and now want to take a deep dive into DataMapper, specifically, configuring Rails to use it and how to interact with it from Rails code.

You already have a Code review for rails pdf. Having a similar pdf which is language agnostic would be great.

- Why another ruby?
- Benchmarks Maglev vs...(MRI, Rubinius, Jruby)
- What is the built in persistence layer? Is there a ruby library similar to mongoid or activerecord that works with it?
- How do you deploy a Maglev application?
- How does it scale?

Please cover the Play 2.0 framework (which is still in beta). It's Java/Scala which is probably anathema around here, but it's very Rails like and uses Selenium, jQuery, etc.

Series of screencasts on setup and common tasks using the ZenFramework current of upcoming 2.0 release.

The perfect compliment to the Meet Eventmachine screencast series would be a screencast on how to unit test Evented applications.

I have a rails 3.0 app w/ lots of javascript (and xml data exchange).

I'm ready to convert it to backbone; I'd like to use coffeescript to make JS classes, etc, but I'm not sure how to go about *migrating* the existing app...

solve common text processing problems with built-in tools

I know jQuery is all the rage but Dojo is good stuff. And I believe one or more of the guys at Sitepen.com wrote it.

Would be nice to see a series of screencasts on DojoToolKit.org

You have a video showing mac app development with Xcode 3. It would be nice to have this updated for Lion, and Xcode 4. With the mac appstore out in full force, it would be nice to have a solid general tutorial on Lion cocoa development.

writing CSS is a pain. LESS makes it better, especially now that it can compile on the fly in your browser during development. You could cover mixins, nested syntax, functions, math, etc.

How to setup Integrity or Jenkins/Hudson to continuously build, test, and generate code coverage reports for your Rails app. Bonus if it also covered building and testing related projects such your mobile iOS and Android apps.