When you search for something on VideoSurf, it brings you results based on visually recognized faces within the video. Another cool feature is the ability to jump to specific part in the video. You can also share them (these specific moments) with friends.
Features:
Video search engine with face recognition
Refine search results based on faces that appear in video.
Timeline to jump right at the video scene you want to watch.
Narrow down results by type (slideshow, TV episode...