Good thread! I'm in Ottawa right now, so Montreal is only an hour and a half away. Depends really what you want to do...
Sightseeing: Vielle Montreal (old montreal) and Vieux Port (old port), Chinatown (small tho), Mt. Royal
Shopping: Cresent, St Laurent, tons of malls in that area too
Nightlife: havent been here long enough

But i wanna check out the strip clubs