The best thing which I like in Google Chrome is its "New Tab" page. Whenever you open a new tab in Chrome, it shows a new page having thumbnails of the most visited pages, recent bookmarks and recently closed tabs.
If you are a Firefox user and want to have the same page in Firefox, then here is a good news for you.
Google has released a new version of its toolbar which can add Chrome's "New Tab" page in Mozilla Firefox as shown in following screenshot:
Just download and install "Google Toolbar" from following link:
Now you can have the same "New Tab" page in Firefox. If you want to disable the page, uncheck "Enable the Google new tab page" option in Google Toolbar Options.