I don't think Hume is going to go too far off the grid on this but will avoid the postcard shots (Roy Thompson Hall, OCAD, Casa Loma, Eaton Centre and BCE Place interiors, etc).
Possible contenders:
* Imperial Oil Building
* Leaside Apartment Towers
* MaRS (old TGH)
* Some Jarvis St. mansions and Cabbagetown homes
* 25 Victoria Street (and the courtyard it shares with Dundee place)
* Old buildings on Spadina (Tower Building, Robertson Building
* New buildings on Spadina (Hudson, Morgan)
* John Daniel's home (or similar in Yorkville)
* College Park (old)
* Daniel Brook Building or similar in St. Lawrence
* The Milburn building
* Merchandising building or other converted industrial complexes
* The Bay Queen Street
* notable places of worship