I just played with the Try Ruby site for 15 minutes, and like it very
much. For new programmers, it's an excellent combination with the
Pick-axe book. I'm sure that a version for more advanced programmers
would be very welcome, and would help in the propagation of Ruby.

A RubyOnRails version of the online tutorial would be really neat!

Can you imagine building your own web app with an online tutorial...

Paul