In September 2008, Leong acted in an episode in Calefare, as a popular singer named Johnny Chia, a parody of himself. When interviewed if he was aware of the similarities between the two shows, Leong expressed ignorance during filming, but has since "immensely enjoyed" the original British sitcom after the fact. He was featured as a celebrity guest contestant in the premiere episode of the Singaporean version of the popular television gameshow Don't Forget the Lyrics!. Along with other singers, Leong managed to raise $25,000 for charity. He was also an ambassador for the Passion Card Ad campaign for the People's Association.
