The first is totally useless - old movies. This happens ALL the time. A random scene from a film will pop into my head for no reason whatsoever. It's happened so often now, that I KNOW, I will run across that movie on TV in the next day or so.

The second is a little more interesting. I am a flight nurse on an emergency helicopter. This doesn't work during the day.....only at night when I've retreated to my room and it's quiet. I don't always get the feeling. But occasionally and a little more often lately, I will awaken for no real reason.....feeling almost hyper alert....knowing that we are about to be requested. Our tones will sound shortly thereafter. I've never had a feeling where we are going or for what....just that something is about to jump off.