I had dinner at Sky Ranch, at Dufferin and Castlefield. It's a family-owned place with a classic Argentinian menu, heavy on grilled meats and with some Italian dishes thrown in.
The appetizers were quite good: grilled provolone cheese, excellent beef empanadas, and palm hearts with marinated red peppers and Russian salad. The mains included some hard-to-get meats like molleja (the thyroid gland of the cow, I believe), morcilla (blood sausage), chinchulin (beef or lamb intestins), kidneys, and chorizo (similar to mild Italian sausage) as well as a couple of different cuts of steaks, short ribs, and milanesas (wiener schnitzel made with beef or chicken). There was also some seafood and pastas on the menu but we didn't try them. Decent french fries and salads as sides.
The flan con dulce de leche was great for dessert; other things available are queso y dulce (a thick slice of creamy cheese with a sort of custard made with sweet potato on top), tiramisu, and various crepes (panqueques).
Being Saturday night, there was also live music. The place was packed with a mostly Spanish-speaking crowd.
The service was very informal and friendly but quick.
The price: about $30 per person, including a half-litre of house wine and taxes!