FishEyeTabs is an interesting way to make the situation of having many tabs open more usable. It’s not without it’s flaws (gets rid of the red “X” for example). I wonder if this would be beneficial or just annoying to users. I think personally the effect would be better on a longer delay so that it wasn’t so instant. You could just mouseover and see the title via a tooltip, but that’s not always intuitive especially for a casual user.
It’s always great to see innovative extensions like this.