Stipple is a new service (still in an invite-only beta) that allows you to create interactive images. Using Stipple you can upload an image and tag it with pinmarks. Within each pinmark you can include videos, links, text, audio files, and more images. Stipple also gives you the option to track where your images are viewed and shared by others. The video below provides an overview of Stipple's features.
Meet Stipple from stipple on Vimeo.
Applications for Education
Stipple reminds me quite a bit of ThingLink. Both services could be used to enhance images with videos and links that they find on the web. One possible use could be to have students upload images of the solar system (or parts of the solar system) then add pinmarks with videos and links about the solar system. You could also have students upload images of famous landmarks and add pinmarks with information about what makes those landmarks significant.