Everyone in the ad industry tries to create viral videos to help their campaigns get exposure and new fans. 

To be successful these videos must be inclusive in tone and make you feel that you are part of the brand message and experience. As a result, they will be worth sharing.

See above's video. It is an imaginative stop-motion film from Levi Strauss of a guy walking across America. It contains 2,770 photos and it comes with a Google map that traces the route. 

Feed Company has collected the 10 most innovative viral video ads of 2010.