What tools are in your Test toolbox?

I'm curious about what tool are the people using for testing

Im currently using Rspec (for my Google summer of Code) and
JUnit+XMLUnit+CruiseControl for my employer, yes I still woking with
Java, no one want to hire my Ruby-fu services :frowning:

Im trying to learn all I can about testing methods, patterns and
tools. I have some questions about who is using and about
when/when-not to use this tools:

* Fitnesse,
* autozen
* CruiseControl.rb
* testing secret tool? tell us your secrets
* Watir
* Selenium

Thanks