He played the antiheroic Marvel comic book character Bruce Banner, heterosexualized by being renamed David (Bruce "sounded too gay") and a getting a dead wife. When he gets angry, David transforms, Jekyll-Hyde style, into the green-skinned, muscular Hulk, who has super-strength, subhuman intelligence, and a nasty temper. Fortunately the Hulk knows enough to avoid harming good guys or bystanders, and he usually disarms or scares the bad guys rather than killing them.
Muscle and Fitness; he appeared on the cover at least once a year.
Other than the documentary Pumping Iron, this was his first screen appearance, but soon his physique and his inspiring story -- he had been nearly deaf since childhood, and had a slurred voice -- propelled him into fame. After The Incredible Hulk, he had starring roles in Hercules (1983), Sinbad of the Seven Seas (1989), The Cage (1989, with James Shigeta as the villain), and The Incredible Hulk TV Series (1996-97), where the Hulk could speak. A special favorite of kids, he appeared as himself on Mr. Rogers' Neighborhood and Where in the World is Carmen Sandiego?
I remember them coming into the Muscle and Fitness editorial office together, looking for all the world like a gay couple, especially Bill in his tan suit and sunglasses.
In his memoirs, Lou stated that he doesn't like to watch The Incredible Hulk now because it is too sad. Bill "was like a brother to me. We grew together. I miss him."
Bill Bixby was a gay ally, of course, and Lou Ferrigno always seemed perfectly fine with the adulation of gay fans. When he appeared on the reality series The Apprentice, he was fine with the elderly gay icon George Takei commenting on his hotness of his semi-nude body, but got upset over a joke that criticized his fashion sense.
Lou Ferrigno, Jr., (born 1984) starred in two of David DeCoteau's nearly-gay movies: 1313: Hercules Unbound! (2012) and 1313: Night of the Widows (2012).
I get more of a gay-friendly vibe from Brent (born 1990). He's not an actor, but you can see lots of shirtless pix on his facebook page.
See also: Guess Which Celebrities I've Dated.