Best: Last year I flew BF EWR-CDG on Thanksgiving day and we had a young female F/A who was friendly, attentive, caring, wonderful. Probably the best F/A service I have ever received on any airline
Worst: About five years ago, flying Y EWR-LAX, a passenger was walking the aisle when he was told to sit down because he was in the way. After a conversation out of my earshot, an F/A with a German or perhaps Dutch accent was clearly heard using the F bomb explaining to her colleague that this passenger had a claustrophobia problem.
I paraphrase, but her very loud comment was something as follows: "What a loser. He has a f***ing claustrophobia problem."
That was about as unprofessional as I have ever experienced.
My other favorite moment was the one time I had the actual Chavon working one one of my flights. I should have asked her for her autograph.