Any time anyone asks me what a laserdisc is, I point them to
James Rolfe's video. Really interesting! I had no idea laserdisc was an analogue format before I watched that. I can get my head around how a vinyl LP works, but I still don understand how you record a picure and sound on a disc and read it back with a laser?!
He's also done a
CED video, although he doesn't do a brilliant job of explaining how it works.
I remember first seeing a laserdisc in a high end Hifi store. They had it hooked up to a massive 60" rear projection TV and surround sound setup. Incredible! Bare in mind, we had a 20" TV at home with a crappy VHS VCR.
I never did get a laserdisc player. I came very close. I found one in the classifieds (pre-ebay) and even drove all the way out to this guy's house in the middle of no-where. The player he was selling had something wrong with it though

I must have a look on ebay...