I love architecture, perhaps even more for what it stands for than the look itself. Architecture has this amazing ability to define where you are within a glance.
OCAD (as Charlatan showed) is a brilliant building for what it is. It makes a lot of sense for Toronto's most prestigious art college to look like a crazy box on top of gigantic pencils. (they won't tell you, but they're still not done the inside of the building yet. Still working on it!)
The famous Sydney Opera house looks classy and fluid. It seems strangely aquatic to me, and it remains as one of my favorite buildings.
I also like older architecture, like the colleges I posted in the University of Toronto thread. We want to look dignified and old, big and expensive. All of the things UofT aims to be.
And I can't get enough of old barns.