I have another, different oddity. Whenever my colleague and I stand up (or also sit down?) on the desk, his Dell monitor would turn black for a few seconds. I don't remember the specifics, but I think it was mostly just the two of us, when other people say down if was fine.

Even if he's sitting on a different table, the moment I sit down his screen would blank for a few seconds then continue to work normally.

I also get electrocuted easily when I use the escalator. It almost doesn't matter what I wear, so it might have to do with my skin or it's conductivity? But that's just a wild theory that would need to be checked.

Edit: Some research seems to point to the static electricity from the chairs.