My favorite big theater in Montreal, where they play most of the big Hollywood releases (it depends on the movie, but if the movie isnt playing here, it will be at the Pepsi Forum). Conveniently located downtown, it is easy to catch a movie after work. The tickets are a little pricey, but the overall experience seems to match the ticket price.
On Tuesdays, they have half off tickets, which cause huge crowds to form. I have only braved it once and that was because a friend purchased the tickets online ahead of time. Its a zoo if you don't get there early enough.
The food is not that great, other than getting some candy and that sort of stuff. The seats are comfortable and there is usually a good amount of room to move around.
Overall, a great time to shut your mind off to the outside world for 2 hours.