What made me think of this again? I don't know, but last winter when I was doing research for a story I was writing, I came across this information about the phonautograph. You can hear a recording (admittedly quite hard to make out) of the inventor singing "Au Clair de la Lune" that was made in 1860, the earliest known recording of the human voice. And it hadn't even been heard before until last year! You can read about it here:
Also cool -- I wrote this afternoon. For almost three hours. Wow, almost forgot what that was like. I'll have to do it again sometime.
And the final cool thing: my new phone. Well, not really the phone. It's not very fancy by modern standards (though it does have a camera in it). But the ringtone! Oh, I went crazy and bought a ringtone: an MP3 of Miles Davis playing "Summertime". That is definitely cool.