Clickberry is a new service that allows users to tag and add aspects to their videos during play. The tags can provide names, information, links, pop-ups and more. Clickberry requires users to install an extension in Chrome or Firefox to use the service. Users can define clickable regions within the video enabling users to highlight important moments or important parts of a video. The service also becomes a social service as users can add Facebook "Like" buttons as well. For an introduction, see the video below.
For those iPhone Users, there is the Clickberry Tagger app that allows users to tag and make videos interactive from their phone.
For Windows, Mac, and iPad there is the Clickberry Interactivity Creator.
I could see teachers utilizing the service to help students identify people in videos that they are studying or helping students focus on an important fact shown in the video. Videos can be a valuable tool in the classroom if used correctly. Often times students have trouble focusing and discovering what to look for while watching a video. Clickberry could provide teachers a way to incorporate content information into the videos they are watching.