This is my favourite Montreal dive bar. I try to stay away on the weekends, but pretty much any night from Wednesday to Saturday is a good night to check it out.
Korova is one of those places that's dead at 11:30pm, but jammed packed by midnight. My favourite characteristics include 750ml bottles of Pabst, Nick (one of the owners), one particular bartender, and a ridiculous amount of young, cute hipster girls.
Personally, my favourite nights are Wednesdays and Thursday because even though it's busy, you can still breathe and move.