Derived from the French word “le parcours" in reference to a type of military obstacle course developed by Georges Hébert, Parkour was first introduced by French choreographer David Bell in 1988.

In order to ensure the safety of future cats, Jul Tu put together a simulation of a head-on collision between two kittens goings in opposite directions.

To commemorate the upcoming first anniversary of Curiosity's trip to Mars, NASA put together two minutes of footage filmed from the rover's eye view while traveling the planet.

If you have been following Filthy Frank's crazy antics on YouTube for some time, it's no surprise that he is the one who started the Harlem Shake epidemic.