Corner of Bourbon & Division

For the geek aspect, there's this awesome geek cafe on Drummond just south of Ste. Catherine called Foonzo. They have a library of board games and card games, pretty much any console system you can imagine, pinball and arcade games, WiFi and best of all it's all free (provided you get something to eat or drink). Coffees, beer, bubble tea, nachos, sandwiches and dumplings (I always get a caramel latte and a brownie, or a beer and the dumplings). They're open late, so it's a good thing for evenings after all the other awesome stuff people have posted about is closed.