The Connection Machine series (which was featured in Jurassic Park) have the most beautiful LED panels.

Reposting some links from a recent Jurassic Park thread -

https://en.wikipedia.org/wiki/Connection_Machine

https://www.youtube.com/watch?v=T4kBRC2co7Y&t=65s (Jurassic Park)

The LED panel is gorgeous:

https://youtube.com/watch?v=6Ko4qBkEcBM (render)

A lot of people have replicated or restored these:

https://youtube.com/watch?v=qm6w57ZcJZQ

https://www.housedillon.com/posts/resurrected-led-panels/

Worked on the CM-1 and CM2. I felt they were awful buggy. At one point they asked if they could use my code to run as a diagnostic, it would break the log() function on occasion.

The Cray fluorinert fountains were way cooler :)