Running into someone from work in the "real" world is always a slightly disorienting experience. But if you think seeing the guy from the next cubicle at the grocery store is uncomfortable, imagine bumping into someone you had to physically escort out of a building by force. That's a not-entirely-uncommon experience for people who work as professional bouncers or security guards.
1.) From Shilvahfang:
I was interviewed by a guy we had tossed out. I still remember his name because he was such a douchebag that we banned him after this interaction and we all kind of laughed at his name because it fit his behavior so well. Think "Kyle Blake," not his real name, but he has two kind of bro names as first and last.
Anyway, fast forward about a year, having finished school, and I'm at a staffing agency to interview for some crappy job. In walks Mr. Blake.
Unfortunately, nothing super interesting happened, but throughout the interview he acted a little strange. I never found out if he recognized me, but I was not offered the job.