This fine art of video making is popular with high school and college aged kids.  They are fun and creative, differing from a standard lip synced video in that they are normally shot as one continuous take with lots of camera action and/or action in front of the camera.  Here are a couple fun ones.

Nice  idea – filmed and run backwards.

Good movement.  This video was shot by the Brooks Film Society in 2011.  Song is Don’t Ever Look Back.