Well, I could swear that my own tv is haunted. Several years ago, when I was in college, My roommate and I were talking about ghost stories. We had the lights in the room off. The only things that were on was my tv with the sound muted and the light in her fishtank. All of a sudden, without either of us moving from where we were (accross the room from tv) or without out either of us touching the remote, the tv just turned it's self off. The power did not go out because the light in her fishtank was still on. The darn thing just shut off. Of course, we both freaked out. Especially since we were talking about ghost stories.
Since then, my tv shut it's self off quite a few times. It's recently stopped doing that. But now the sound goes lower on it's own.