Robert J. Sawyer notes the launch of a new science fiction convention in Toronto: SFContario, the first iteration of which will take place November 19 to 21, 2010 at the Ramada Plaza Hotel in downtown Toronto. (I stayed there last month, oddly enough. Avoid the restaurant.)
Toronto has other SF conventions — in particular, Ad Astra, which takes place in early spring. (The next one is scheduled for April 9 to 11, 2010.)
Though I’m a lifelong SF fan, I’ve never actually been to a convention, despite thinking about it really hard every now and then. Will have to rectify that at some point.