Might be helpful for pointing beginners at...

"Ruby metrics don't get any easier than this."

"Chili is the jQuery code highlighter plugin."

"Review Board is a powerful web-based code review tool that offers developers an easy way to handle code reviews. It scales well from small projects to large companies and offers a variety of tools to take much of the stress and time out of the code review process."

This is just awesome

Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. Although mathematics will help you arrive at elegant and efficient methods, the use of a computer and programming skills will be required to solve most problems.

Rails From a .NET Perspective