While this may not be a Canadian celebrity sighting, since it was on AC I thought it worthy of passing on. A few days ago on my YEG-YVR connector to fly downunder, a famous Aussie rick band INXS was sitting in bus. class! Nice guys as at baggage carousel, I asked for all autographs as they were a fave band a while back. They mentioned were continuing the tour in N. America, but didn't comment on the AC service.
Cheers from SYD!