Another vote for Scrum Master here. It's only in the past 5 years or so that I've personally seen it as a job in itself - previously, I'd seen Scrum Master as
part of the role of one of the developers or similar.
But now in large corps, Scrum Master exists as a distinct job, which appears to require doing very, very little - chairing most of the regular scrum-related meetings (daily standup, planning, demo, and the much loathed retrospective), sending out meeting invites, occasionally futiley butting heads with the Project Manager, and... actually, I think that's it?!
I've worked with some good people in the Scrum Master role, but beyond being good people to work with, they are glorified secretaries, and really don't have anything to do all day.