LOS ANGELES, Nov 26: South Korean rap star Psy’s music video “Gangnam Style” on Saturday became the most watched item ever posted to YouTube with more than 800 million views, edging past Canadian teen star Justin Bieber’s 2-year-old video for his song “Baby.” The milestone was the latest pop culture victory for Psy, 34, a portly rap singer known for his slicked-back hair and comic dance style who has become one of the most unlikely global stars of 2012. (agencies)