Xoopit is a companion Firefox plug-in that turn Gmail in a social-sharing network. Xoopit scans your Inbox for Images, Videos and Files regardless if its an actual attachment of a link. The plug-in provides a additional views to view shared media and files in a gallery format without leaving Gmail. It also automatically shows all related media in respect to the current thread being read and the sender.
Check-out the screen shot of my Xoopit enhanced Gmail!