YouTube's first video was uploaded 10 years ago today, starting a technological and cultural revolution. To mark the milestone, here are 10 of its greatest hits,

One of the site's founders, Jawed Karim, uploaded a 19-second clip of elephants at San Diego Zoo in California on April 23 2005.

Just over a year-and-a-half later, Google bought the video-sharing website for $1.65bn.

And after a decade, we're still wasting too much time watching stuff.