Mandy, I used to make up stories in my head at night when I was a kid, and then when I woke up I'd write down what I had come up with. I'm still upset that I threw away that notebook.
DH used to do something similar to your DH-he'd leave the TV on all day even if he wasn't in the room. He got that from his parents who still do that. It bugged the crap out of me to have noise going on all day and he finally stopped doing it.