If you have two or more tabs open, you can temporarily zoom them out and look at them like they were large thumbnails, not too horribly different from Ffx's "Tab Groups".

You first need to check that "Quick Tabs" are enabled. Type Internet Options at Search. Under the General category, click the Settings box for Tabs, checkmark "enable quick tabs" and restart IE. From then on, ctrl+Q will activate the feature. ESC will exit.