We know video is experiencing explosive growth across the web, which is good. But we don't want to ape the world of traditional media, and leave video as a purely passive medium.
Check out this very interesting, interactive YouTube video that is essential a tribute to London, my hometown. Very impressive. Hat tip to Lau Moyano.
There is an interactive version and a non-interactive version. Click the buttons at the bottom of the video that says :Start Again" and then follow the instructions to select the track to add next (You will need to have annotations enabled.