Firefox Extension - Tab Scope

I stumbled across this new Firefox extension a few days ago in a post I found on Digg. The extension is actually really cool and helpful, it simply gives you a preview of what is on a particular tab when you mouse over the tab. The preview includes a small display of the page as well as back, forward, refresh, zoom and close buttons. If you can't get an idea of what to expect from the picture to the left just check out the larger picture below

Here is the download link - Tab Scope


Here is a larger shot of it in action