I just saw Shawn Johnson win the gold medal on balance beam at Beijing Olympics. Her coach? Coach Liang Chow. In the 1980’s, he was the captain of Chinese gymnastic team. Liang has coached Shawn since she was six years old. Johnson will be 16 in Beijing and competing as the reigning world all-around champion. Shawn Johnson, who calls Liang her “second dad.” 
Some folks have noted that nlike most gymnastics coaches, Liang can often be seen smiling and laughing on the sidelines.
Watch him talk to Shawn Johnson: http://video.aol.com/video-detail/coach-liang-chow-talks-about-shawn-johnson/827795858
Source
http://www.zimbio.com/Liang+Chow/articles/2/AMAZIAN+WEEK+Coach+Liang+Chow