A look-alike is a living person who closely resembles another living person. In popular Western culture, a look-alike is a person who bears a close physical resemblance to a celebrity, politician or member of royalty. Many look-alikes earn a living by making guest appearances at public events or performing on television and film, playing the person they resemble.
[Bruce] Willis first found fame with his starring role in the hit TV series Moonlighting (1985–89) establishing himself as a comedic actor. However, it was his then-unexpected turn in the Die Hard series that catapulted him to fame. He also was successful in his turn as the voice of little Mikey in the Look Who’s Talking series
Bae Yong Joon (born August 29, 1972 in Seoul, South Korea), is a South Korean actor best known for his roles in numerous television dramas. He is also known as the abbreviated BYJ to many of his fans, or as Yon-sama (ヨン様), with the “sama” being an honorific suffix.