Singer Psy during his military service
Psy made his debut in South Korea's pop industry back in 2001 but it wasn't until July that he shot to global fame with "Gangnam Style" -- now the most-watched video on YouTube. Psy, whose real name is Park Jae-Sang, completed his two-year military service in July 2009. It was his second time around, because he was forced to repeat after it was discovered he had continued with his showbiz interests during his first two-year stint. These images were filmed in 2008 while he was on compulsory military service.