Seems very obvious to me. Looks very good, as new as possible, and hardly any good tutorials to find. This could be huge.

In my opinion a screencast on how to integrate Amazon webservices with a web app would be a good show.

Do an episode on nginx.

Topics could include:
- Installation & Basic Setup
- Subdomains
- Re-writing ( could use maintenance.html as an example )
- Load balancing ( could mention the fair balancer in there )
- Profiling / Optimization
- Gotchas

1. How to embed Google Calendar in a Rails app.
2. How to integrate the Google Calendar api with Rails app.

Google calendar rock! So does Rails. They are made for each other.

A screencast or PDF showing unique techniques and patterns used by Rubyists.

A screencast or PDF on using memcached to dynamically cache database and rendered content.

A PDF that explores and explains the design and implementation of Rails itself.

A PDF sequel to the ActiveMerchant book that talks about setting up and processing monthly billings in a secure way that complies with industry regulations.

Introduction to Erlang

I think the chef documentation is really bad. It would be great if you walked through an example of building a slice and using Chef to bootstrap it.

Lots of people use business webapps for invoicing, project management etc. Learning how to use ActiveResource to build a dashboard of all these webapps would be useful.

I couldn't find a comprehensive tutorial on RSpec that walks through all the methods and techniques I would require to test my social networking application. You know, testing stuff like Uploads, Forums, Posts, Users. May be Webrat should also be covered. This is really something that's not being done since long.

A screencast or series about using regular expressions to match patterns. Originally suggested by Pete Forde.

Trying to learn BBD, but most documentation is on RSpec, would like to see a screencast on Shoulda + Cucumber that doesn't assume you're already an expert RSpec user

Implementing an sample rails web application using Tokyo Cabinet, Tyrant and Dystopia
http://www.scribd.com/doc/12016121/Tokyo-Cabinet-and-Tokyo-Tyrant-Presentation

A complete A-Z screen cast for how to setup a simple, yet functional user authentication and login.

Should have:
RESTful properties
Rails 2.x
Account creation
Account activation
Basic functionality

A screencast about building a website with current visual idioms. Focuses on CSS, HTML, and design.

Create a screencast showing how to use selenium on rails and some of the best practices surrounding creating tests