In my engineering capstone course (semester or year-long group project applying your lessons), we had a guy that literally did nothing. On the last day when we were set to present to the class, we were preparing in a computer lab beforehand and he had signed onto the computer we were using. We finished the project, and since he was logged on he said he'd email it to each of us so we could load it up in the class. So he did that, logged off, then we went to class. We got there, and 5 minutes before our presentation he realized that he didn't attach the file, and since it was a public university computer it didn't save the data after logging off. Literally our entire presentation was gone. And that's the day I almost murdered a man.
i tend to always take the leader role which is annoying