I dislike it (intensely) when they are in a rush to clear plates. "Are you still working on that?" is the most common and totally inappropriate question asked. I suspect they mean well, but it sounds like eating their food is such a chore. It just sounds rude.
I especially dislike it if my companions are still enjoying their meal and the server wants to take mine away. It sort of rushes them also if I sit there with nothing in front of me, and what if, heavens, I was saving half my entree to share with my husband?
Well, like almost everyone I'm also not too fond of "My name is Bubba and I'll be your server tonight."