As popular as horror is at the movies, the genre has often had a hard time on TV. Even though The Twilight Zone also had elements of sci-fi and fantasy, the fans had to write to CBS to keep it on the air.
Even if you don’t know the name Lance Henriksen you know the face, and you’ve certainly seen him in a number of genre classics.
Many genre fans can fondly recall when X-Files was the hottest thing on network television.
I once asked a producer how important casting is for a movie, genre or otherwise, and he told me "It's all you have."
I often find that people are either a Munsters fan, or an Addams Family fan.