Yep, I moved the computers out of my bedroom after college, so now I have a fan that I turn on when I go to sleep.
With a fan or something running, you don't get 'interrupted' by all the other quiet noises that you might hear to distrub you. As far as sleeping with the radio/tv on - I'd never fall asleep. I'll lay there listening to whatever it is and thinking about it for hours, then at like 5 am I'll freak out, turn it off, and pass out asleep. <-- used to have an ex-gf who would always put the radio on, drove me insane