I checked out the Christopher Pratt exhibit at the National Gallery of Canada yesterday and it was excellent. I wasn't allowed to take pictures and the examples on the web don't do his work any sort of justice so you'll just have to trust me that it was great. His work is all of fairly ordinary things; buildings, streets, rooms, ships. But he uses color in such a way that elements of the paintings take on a 3D quality and seem to jump right out at you. Very cool and worth checking out if you get the chance.