I'll be in Toronto for a few days soon on business and want to plan ahead to eat as well as possible.
Ideally I'd like to find any ethnic / regional food we don't have in San Francisco. I've heard there's a big Caribbean population but I don't find much about that in the archive, maybe I'm using the wrong search terms.
Beyond that, I prefer rustic, ingredient-driven, "slow" food to creative, chef-driven haute or fusion cuisine. My favorites of such places at home are Chez Panisse, Incanto, Oliveto, Pizzaiolo, and Zuni. Just reading the menu at French Laundry makes my stomach queasy.
Reading through the archive, these jump out at me:
Lee Wah Heen for dim sum
Chiado for Portugese (very rare in the SF area)
New Bilan for Somali (none in SF area so far as I know)
St. Lawrence Market or Kensington Market for scene & peameal bacon sandwich
Jamie Kennedy's Wine Bar for good selection of wine and "Canadian tapas"
Rashnaa for Sri Lankan (none in SF area)
poutine truck in front of City Hall