Hands down my favorite cheap-eats place in Toronto. My grad school buddies and I would come here every week or two for lunch. The pad thai is awesome - get it just a bit spicy and it adds some extra punch - and is made really quickly. The food is affordable and fresh, and it's nice that it's an independent shop too (much better than patronizing pizza pizza).
There isn't much in the way of seating - some plastic chairs that were meant to be used on a patio and some stools and a counter, but it was always sufficient and better than eating in the basement of Sid Smith.