I've had Federick's since I was in elementary school, so that in itself is amazing. I didn't have it as often early on, but when they opened a new location up in Markham, I was sold (and so were my parents). I'd often see food from Federick's at least one or twice a week - sometimes even more on a special occasion.
I'm not very fond of the service, both in person and on the phone (otherwise I'd give Federick's a 5 star review), but honestly the food and the nostalgia of it is more than enough for me to come back.
Love spice? I recommend getting the Chili Chicken: stir-fried chicken with onions, smothered with a spicy gravy-like sauce. The spice kicks in after the first bite and gradually builds the more you eat it.
Want spice, but fried? Try the Chicken Pakoras: fried balls of chicken mixed with green chilis. They're absolutely superb with a squeeze of lemon.
Not feeling the heat? Try the Beef Fried Rice, Crispy Shrimp, or Crispy Chicken Wings. For a Hakka Chinese place, they actually do chicken wings pretty well.
Not everything is a hit at Federick's, but the ones that are good are REAL good.