bauhaus to our house is great- that got me started on a thesis on le corbusier. in that vein of architectural criticism, lewis mumford's 'from the ground up' is biting, especially his critique of the un secretariat building. apparently corbusier couldn't stand window shades partially open, since they disturbed the facade, so they were originally either up or down, until the secretaries complained.
'the most beautiful house in the world' by witold rybynski (sp?) is worthwhile- a montreal architect's evolving plan for a boatbuilding shed that got completely out of control.
just read 'up north', a collection on canadian architecture. pretty.
this is classic- probably known to many of you: "Building with wood and other aspects of nineteenth-century building in central Canada" John I. Rempel. i found the historical survey of pins especially interesting, amongst lots of interesting detail.