Nice staff, great beer selection, good food. Pretty convenient location near the Ossington subway station too.
Tall Boys is known for their craft beers, and the list - all Ontario, all the time - is extensive and well-chosen. It's a good mix of a variety of breweries and styles of beer.
Don't go there just for the beers though. This place is popular with locals because the staff is very nice and the food is good. Try the wings or the tacos, and I have also heard good things about the burgers.
If you're a Jays fan, this is a great place to watch the games. They host different events when the Jays are out of town, or when they're not playing they'll show old Jays games. Goes good with craft beer.