Hong had a small part on a 1972 episode of CBS's "The Bob Newhart Show". He was a frequent guest star on the 1972–1975 ABC television series "Kung Fu", joined the cast on the final season of CBS's "Switch", as Wang, and also played a flight attendant in the original 1979 film "The In-Laws". He appeared as a doctor accused of performing an illegal abortion in the Blake Edwards movie "The Carey Treatment" in 1972. He starred as a uniformed man in the 1980 comedy cult film "Airplane!" He has also directed such films as "Teen Lust".