The man behind many of the biggest TV shows in the ‘70s and ‘80s died yesterday. Writer-producer Glen Larson was responsible for shows such as the original Battlestar Galactica, Six Million Dollar Man, Magnum P.I., and Knight Rider. He died of esophageal cancer in Santa Monica, California at the age of 77, according to The Hollywood Reporter.

To science-fiction fans, Larson was best known for the seminal Battlestar Galactica TV show, which ran for just a single season from 1978 to 1979. The show massively grew in popularity over the years, and spawned a rebooted TV show on the Sci-Fi channel in 2004.

Earlier this year, reports revealed that a new Battlestar Galactica movie was in the works. Larson was set to produce the film, which was intended to reboot the franchise once again. While Larson unfortunately didn't have the chance to leave his fingerprint on the film, his influence will undoubtedly be felt when the movie eventually hits theaters.