Super Junior's Kim Heechul
He even didn't know where SM Entertainment’s building was and was late for his Audition. He just sang the national anthem at the audition, but he passed it because he was too handsome.
TVXQ's Max Changmin
He received a business card from a staff member of SM Entertainment when he was playing badminton at his school. So, his mother took him to his audition and he passed it.
When he was eating tteokbokki(Stir-fried rice cake, one of the most popular snacks among Korean people), a staff member of SM Entertainment came running after him and he tried to run away because he was so surprised. However, he was caught by the staff and passed his audition.
When he was warming up his voice to have an interview for Seoul Institute of Arts, he met a staff member of SM Entertainment and he could get a chance to participate in the agency’s audition.
f(x)'s Amber and Luna
Amber passed her audition thanks to her good singing ability, but she eventually became a rapper of her team. Luna passed her audition because she had great dancing ability, but she became the main vocalist of her team later.
Her brother took part in the SM audition and BoA just accompanied him. However, BoA was the one who passed the audition. The notable thing is that she passed her audition twice at a time. Lee Soo Man picked her because of her great singing ability, while the other staff member also picked her because she danced very well.
Jessica & Krystal
They met a staff member of SM Entertainment when they were shopping at the department store.
Lee Soo Man personally picked her when she was dancing as a member of Beijing dancing company.
Girls' Generation's Tiffany
She was picked by a staff member of SM Entertainment when she took part in the Korean festival in the United States. She was warming up in front of a rest room.
Source : KpopBehind