Even more fun is the sprint retrospective retrospective, where everyone argues for two hours about what went wrong in the sprint retrospective.
I wish I was making that up.
Edit: it's not that I don't get the point of retrospectives, I do...but I've seen them taken to comically absurd levels, and in any sizable team it always seems to be the three people that care the most about their particular flavor of Scrum that sit around arguing about how much better it was the way they did it at their last company, meanwhile everyone else just wants to leave and get back to work. A small number of loud people will always have strong but completely arbitrary and anecdotal opinions about process, and in my opinion it's not healthy to give them a regular spot on everyone's schedule to complain about it.