This is a great series of videos which were done by the Big Red in LHR on November 27th of this year.
Although I have never made it to the Maple Leaf London Pub which is a popular spot for expatriate Canadians living in the UK a camera crew was sent there to film a documentary about Canadians missing the holidays. The pub invited 200 unsuspecting Canadians for a night out of missing home as a pretext.
The first video gives some background on the job the airline does and the second video gets interesting when the Captain rings the bell at the pub and makes an announcement.
http://youtu.be/gfEv8X4RCIo
http://youtu.be/r5YvVB1FJrs