I always turn on the ID channel (murder crime stories) in the bedroom when I go to bed. You can follow the story without actually watching, and something about the cadence of the narrators always puts me right to sleep. It stays on for hours before I wake up and turn it off.
Sounds like a good idea to help fall asleep, my doctor prescribed a low dose zanax pill for the same.
Unfortunately my local town run shitty cable service does not carry that channel..