Approaching EDI on the Shuttle in winter a few years ago:
Captain: "For those of you on the left the weather is cold, for those on the right it is mind-bogglingly cold!".
Another time on a BA flight inbound to LHR we were told the crew were doing a pantomine for charity that evening + we were asked to guess who was playing the ugly sister, Cinderella etc...with a prize of a bottle of Champagne bought by the Captain.