Fotobabble allows one to add narration to a photograph. You can then share it, embed it in a wiki or blog, or view it on the web.
Make a minute-long presentation about a chosen picture in the target language.
Make vocabulary cards with clear audio definitions of the chosen word added to the picture.
Practice making speeches privately, to be shared later in class.
Give students a picture to add a narration to which tests their understanding and vocabulary of a topic.
Use it as a speaking assessment tool.