(straying slightly off-topic) I recently had the same experience with an Apple eMac. Grab a window, shake it around as fast as you can, or just move the mouse cursor around in circles quickly.

"Whoa, why does this seem so much more responsive than my modern machines?" Two things, I think: 1) the mouse cursor is being updated with every vertical refresh (80Hz), and 2) the latency of the CRT must be lower than an LCD.

Not bad for a 700MHz, 18 year old machine!