Man, the Z80 brings me back as well. I spent the last few years of high school tinkering with Z80 chips I was able to get for really cheap. I ended up making a few breadboard computers and they could do really basic things like flash LEDs and one could even run 4k BASIC, granted very poorly and with a lot of broken text.
It surprises me that they are still actively in production, and even still being used in modern technology. I'm not sure about the newer models, but the TI calculators we used in high school, the TI-84 models, used a Z80 processor. I wonder for how much longer this little 8-bit gem will continue to be relevant.
Wow, very surprised to read they're still in production!