Ken Jeong. Actor: Hangover. Ken Jeong is an American actor, comedian, and physician. He is known for his roles as Ben Chang on the critically acclaimed NBC/Yahoo! sitcom Community (2009) and gangster Leslie Chow in Hangover (2009) Trilogy. He appeared in Michael Bay's Pain & Gain (2013), as Johnny Wu, a motivational speaker. Ken was born in Detroit, to Korean parents. He completed his internal medicine residency at Ochsner Medical Center...