Anyone else remember programming a computer so early that the CPU register panel used incandescent bulbs?

I started writing horror stories and triumphs of those days but I'm sure nobody is that interested, I'll just say people don't always appreciate the luxuries they have as programmers today.

When is the last time you got a weekend 3AM phone call desperate for immediate support to get a system back up and running? And over the phone with no remote access on your end?