Gangnam Style by Psy is the first video to hit two billion views on YouTube

very honorable and burdensome numbers. With the appreciation,I'll come back soon with more joyful one! #THX pic.twitter.com/Jay0pqeEZy
— PSY (@psy_oppa) May 31, 2014

Achieved on 30th May 2014
Earlier - 1 billion on 21st December 2012