As I've said, it would be difficult finding a consistent enough theme of movies to play in prison. I guess reality shows, but even then, would the shows be "real" in the canon? And why would they be horror? The only thing I could think of that would make it work is he dies and his ghost takes over the studio, which is now been converted to reality shows, making it his world you're entering--think
from Supernatural. But even then I'd like a second one somehow for the framing to be in prison.
Now that I think about it, while Case Files was a great idea, maybe each novel could've instead been adapted into its own horror movie that he broadcasted?
Or how about decades ("HRB Presents: Pop Torture/CUT-ture")? IDK what torture methods would be used for each, of course.