I finally had my first visit to this Toronto fixture a couple of weeks ago.
So greasy... Might I recommend only trying it if you've had a considerable amount to drink first.
You can tell at a glance that this place has been around forever, but they've had a long time to perfect service and it gets the job done. Menu and one long low counter with seating run the full length of the place. A TV in the corner keeps you informed of the news, and staff are happy to chat while you wait (not long) for your meal.
I had the gyros breakfast on this visit and enjoyed it, but kept looking over at my vesta-companion's meal of liver and onions - it looked kinda good - not what I would have expected of liver and onions at all.
Open 24-hours, I have to assume they get most of their business during the hours that most other places are closed. Still, not bad.