Patton Oswalt’s Letters to Both Sides - Oswalt addresses "all of the comedians in the room" and "all of the gatekeepers" at Montreal’s Just For Laughs 2012 about living in a living in a "post-Louie world".
Timelapse Intersection Articulée à Montréal In October, 2011, the Contemporary Museum of Monteral presented "Intersection Articulée", an interactive installation from Rafael Lozano-Hemmer. It was composed of 18 projectors of 10k watts each, visible from ~9 miles (15km) away. Here's some time lapse video results, with music.
Dangerous When Provoked Pt. I | II | III | IV | V is a documentary about Canadian editorial cartoonist and Order of Canada recipient Terry Mosher, also known by his pen name Aislin.
Like lane markings, but better. Montreal artist Roadsworth transforms street markings into boots, bullets, and zippers. Sad postscript? He's been busted.
Positive, by Ian Stephens. Not, perhaps, in the tradition of Day Without Art. But... Ian Stephens was a poet, musician, and performer from my neighbourhood in Montreal who died in 1996.