In France, this customizable viral ad, promoting a Jurassic Park-esque ride at the Futuroscope theme park,provided a fun way to scare a friend.

Before emailing the video link, you'd enter in your friend's phone number. Then, as the video played, your friend's cell phone would ring and he/she would hear the cries for help from the traumatized characters.

Produced by Vanksen Group/Caid Productions and directed by James Monohan, the ad created a sensation thanks to its "callback" technology and campaign.

Originally hosted at Experience20.com, the video is no longer interactive.