I was a projectionist at a local 14-plex for a couple of years back in college. It was a really excellent job for getting homework done while the machines buzzed in the background. I miss the simplicity and meditative quality of threading the machines and keeping everything on schedule, and often find myself wishing I could retreat to a job like that again. The occasional brain wrap (or worse, a thrown film) always kept us on our toes, but otherwise it was generally low stress and gave me plenty of time to think about whatever hobby I was into at the time :)