I tried the AmpHour as "bedtime story", but then I got worked up about one of Dave's rants, that I couldn't sleep.
Another time I did fall asleep, but I was annoyed, that I had to listen to it again, not because it was so horrible, it wasn't; I could only remember fragments, so the whole thing was an excercise in futility
I have since learned to listen only to stuff I already know. Every night I turn on George Carlin on my tablet and enjoy the few minutes I hear anything.
First, it helps me leave all the crap behind that happened at work.
Second, I'm not angry when I fall asleep too early.
Third, no matter how often I listen, George always brings a smile to my lips and I sleep very well.
If you're planing on sleeping, I recommend you pick something else, an older episode you already know, maybe. But try it out and see.