For fun check out this video - 7 Second Demos, I like them a  lot:

Snap: http://www.projectaustin.net/video/714ef126-2a57-4b9e-b4fd-38b479d51728

Preview: http://www.projectaustin.net/video/869a7e8b-9625-44b2-b66b-dbefd3b13095

Shake: http://www.projectaustin.net/video/47905b99-01f4-47c1-b00d-fb47cc67da37