What are great cafés to while away an hour or two?
I'll be in Montreal for the weekend and right now I feel like spending most of that in cafés just hanging out and people watch.
It doesn't matter whether they serve coffee or tea - as long as they do it well. And if there's good snacks to munch on, my weekend won't be able to get any better.
Oh, if you have ideas, say what the draw of the place is: people watching, atmosphere, architecture, chow, etc.