I had a bit of an odd one recently in CE. I was in the window seat and the guy in the aisle was SO nice that it became a bit much in the end.

For example, whenever he got up, he asked if I wanted him to bring my bag down from the overhead bin. He put his headphones in and then asked me a minute later to tell him if there was any noise leakage etc. He went to the galley to get something and asked me if I wanted him to ask for something for me.

It was lovely, but quite disconcerting !