That's really cool! I experience the exact same thing. I used to listen to Stern everyday for years. When I hear old shows with memorable parts, I can remember the exact location, time of year, lighting, and weather of the moment when I first heard it. And when I think about various locations, times of my life or things that I did, I start to remember moments from the radio show.
It's really fascinating how our brains form strong memories through these auditory and visual associations. It seems like the more interesting the the sources are, the more likely you'll remember it for many years to come.
This might be an unrelated problem, but I find that when I copy a large amount of text and paste it into iTerm, it takes a long time to paste. This often happens when pasting into Vim, so it could be a vim issue. For example, copying the code of a Javascript library. When I do this in a text editor outside of iTerm, it's nearly instantaneous.
Just finished Confessions of an Economic Hitman by John Perkins. It was quite the eye opener.
Now I'm on Confederacy of Dunces by John Kennedy Toole. Very funny book so far. The main character, Ignatius, is such a piece of work. I was slightly annoyed at first, but he's so odd and unique that it kept me captivated. Now everything is just really funny.