The old disk packs were cool
When I was at RPI for a couple years I did a summer job working at the computer center -- transitioning from an IBM 360 to a 3030.
The new 3030 data center was in the old Chapel. I was working in the basement punching twisted pairs in in the comms room when a thunderstorm came through. I got a jolt, lifted me and knocked me into the back wall (fortunately the room was only 6' wide). Turns out they hadn't connected the ground strap from the TELCO room floor (metal grid) to the main floor. D'oh