Don Juan DeMercado (Traditional Chinese: 情人眼裏高一D) is a TVB Mini-New Years series.

The story is about a plain-looking vegetable market worker Gung Yan-tung (Wong Cho-lam) who mysteriously turn into the most popular cantopop star Gan Lik-shun (Bosco Wong) after he eats chocolate.

While Gun Lik-shun is in "singer mode", he is by far the best selling celebrity in Hong Kong.

He soon develops a relationship with Tse On-fei (Kate Tsui), who has no idea of his real identity.

The character played by Bosco Wong, Gan Lik-Shun is a spoof of Eason Chan's Chinese name "Chan Yik-seon" (陳奕迅), while Wong Cho Lam's role, Lik-Shun's original form's name, Gung Yan Tung, is a spoof of Gillian Chung's Chinese name "Zhong Yan-Tung" (鍾欣潼).