Kinetic typography.

Realmente desconocía la existencia de esto.

Also worth watching:

• Is this your homework, Larry? -The big Lebowski. [link]
• The 8 rules of Fight Club -Fight Club. [link]
• Why, Mr. Anderson? -Matrix Revolutions. [link]
  

Más info: http://en.wikipedia.org/wiki/Kinetic_typography