The service is so-so, the atmosphere is pretty basic, it's a total dive, but the pizza is fantastic. And there's no other place I have been to like it here in Toronto.
It's what the name says it is: Big Slices. Each slice is approximately the size of your head, or of your head if it's a perfect circle, a small pizza. The toppings are great, and there's lots of them. It's open until 5am most days, and the slices heat up quickly even if they're not right out of the oven.
Price is fair at a little over $5 a slice.
Worth the trip! Go now!