This is about both worst boss and most annoying co-worker.

Well, this boss didn't care how much code we wrote, or how good it was (well, at least he didn't care that much); only how much commits we do. And this coworker literally did a script to do a commit every 10 minutes. 24/7. Everyone else was completely mad about it and about a week later we achieved that he was kicked from the job. Since then I still get trauma if someone commits something unimportant.