Rated 4 out of 5 stars
I tried to use Venkman to do what this add-on does, but I could never figure out how to make it work. This is straightforward and allows you to easily run script commands in any scope you need to. An indispensable tool for any extension developer.
One small suggestion/request: To simplify things, I think the Evaluate and Window buttons could be combined into one button that is a menu-button.
Thanks for such a great add-on!