So, I'm not normally a fan of all-you-can-eat Japanese restaurants. The quality of the food usually is so poor, you'll regret it afterwards. However, the all-you-can-eat option at Sushi sky is pretty amazing.
You get to choose from a pretty big menu, ranging from sushi rolls to sashimi to udon noodles to teriyaki to tempura to much more. And, the food quality is really quite good.
Best of all, the all-you-can-eat lunch on weekdays is just $15 CAD! It's practically free! So bring an empty stomach, and get ready to gorge!