I was looking for a spot to grab some breakfast with a friend who had a layover here at YYZ. I found this place through Chowhound, my second foodie news home. I was a little concerned at first about the place since it sounded more like a cafeteria instead of a diner but I gave it a shot anyways since it was so close to Pearson.
It's supposedly a popular spot with airport personnel but while I was there I saw all kinds of people including truckers and businessmen who might have worked in the area. My friend and I had breakfast, which I believe is served all day, that included 2 eggs, home fries, buttered toast, your choice of bacon/ham/sausage, and coffee for the great low price of $5.99. I thought it was a steal with the amount of food we got. Pretty standard fare for a greasy spoon diner.
If your in the area and need a spot to grab food before or after a flight this isn't a bad option, and it is open 24hrs.