The High Park Library is a wonderful little branch, located in a converted church. The ground floor is a bit cramped, but the second floor has a huge ceiling, plenty of light, and windows that preserve the old church nave. There's also an added wing to the north.
The slightly monastic feeling makes it a great place to get some reading in, without the intimidation that can come from hanging around old-money university libraries. And it's easier to sneak in a coffee from cafes across the street.
The selection is pretty standard for a small branch. The kids' selection on the ground floor isn't bad, and there's a growing graphic novel shelf tucked away in a corner of the upper floor.