At this point, it's pretty much official: 2014 has been the year of "Happy" video, with thousands of groups posting videos of themselves getting down to the infectious Pharrell Williams tune.
Above, one more "Happy" video to start your week off with a smile, this time featuring dozens of members of the Canadian Olympic and Paralympic teams who competed in Sochi this year — including past guests Tessa Virtue, Patrick Chan, Charles Hamelin, Jennifer Jones and Kaillie Humphries. There are also appearances by Calgary Mayor Naheed Nenshi, Liberal Party of Canada leader Justin Trudeau and, if you skip to the 54-second mark, a certain bearded television host you may recognize.
The video was released to mark Olympic Day, the anniversary of the founding of the modern Olympics in 1894.
And here's one more "Happy" video for you, one of the very best of the form, shot in the Filipino city of Tacloban in the wake of Typhoon Haiyan.: