I used to frequent this location when it was Rasa Sayang, also a Hakka Chinese restaurant, but not to be confused, Great Eastern is definitely a cut above all Hakka style digs in Toronto.
The place is pretty much a clean, casual, family style eatery with excellent, hospitable service. The lady manning the restaurant always has a warm, smiling disposition, that you can't help but leave feeling positive about the experience.
My favourite dish is the Manchurian Pakora dish($8.50), made with freshly deep fried vegetarian dumplings in spicy manchurian sauce. I also heartily recommend the Kung Pao chicken($8), which is not saucy, but colourful in its peanut, vegetable and stir fried chicken splendor.
An easy standard is set when you fall in love with a family favourite, the Eggplant in hot garlic sauce($7.50), which is unsurprisingly extremely garlic-y.
I pretty much expect to try almost all the dishes at least once.