Examples of (in my opinion) harmless and excessive courtesy.
I was returning home about 8 nm out when the nearby LARS asked me if I could descend 'below 1400ft' early to assist another aircraft joining their ILS. I told them I was able to comply, did so, then shortly after when I changed to my home tower they said "Golf - Blah Blah, frequency change approved, skwark 7000, thanks for that".
Another day (2nd Jan?) I heard
"Blah Radar, Golf Blah Blah Blah Blah can I first of all take this opportunity to wish everyone at Blah a very happy new year and thanks for all your help during the last year. It's really good to know you guys are down there looking out for us. We're a [type] [somewhere] to the fly-in at [somewhere else], [some] on board [position] [altitude] [heading] [routing] did you know there's a fly-in at [somewhere else] today? I expect you're going to be quite busy. Errr, we're requesting a basic service.