"The real bleeding-edge technology set to take off this summer is called "hotspotting." [Online video ads] -- designed by upstart interactive agencies such as Deep Focus, eLine Technologies (VideoClix), Klipmart, and MovieBanners -- will embed hyperlinks and pop-up windows in the frames of the movie trailers, turning each character or object into a virtual library of information. Clicking on Batman, for example, could lead you to a bio of actor Christian Bale. Rolling the mouse over a specific War of the Worlds frame might give you a link to a site selling the novel."
-- Business 2.0 via Lost Remote