There are a bunch of suggestions about dinner places on another current thread.
Pulling from that discussion, here are a few thoughts about places we take people from out of town:
Grey Gardens - lots of good wine selections, great food ranging from nice crudos through fun vegetable dishes and fun pastas that all shift with seasonal and local availability.
Actinolite - very seasonal and locally focused, including foraged ingredients.
Canoe - a great view, a focus on pan-Canadian ingredients.