There are plenty of Canadian celebrities, you're right, although it's worth noting they almost all live and work in America, and achieved their level of success because of working in American media.
Canadian inventions and discoveries, I mean, I always find it laughable when Canadians exclaim proudly how we built the space arm, considering the entire rest of the spaceship was built by NASA, and then launched into space by NASA, which is a significantly greater achievement. It's a good example of Canadians being overly proud of their mediocrity.
Btw, I doubt very highly that al-Qaeda in Iraq (or in Yemen, or in Somalia, or anywhere else) totally overlook our presence in Afghanistan.