As of May 2014, more than 1,500 'Happy' videos have been created.

This image appears in the gallery:
The Story Of How Pharrell Became The Most Influential Man In Music

1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
9. 

10. 26 images

See the full gallery: The Story Of How Pharrell Became The Most Influential Man In Music