Potbelly used to be my go-to when I lived in the states for some good & quick sandwiches and i was SO happy to see that they made it to Toronto!! There aren't that many options to choose from -- mostly just cold meat-based(i recommend the wreck or the italian!!). The concept is similar to subways but much better quality. You choose the sub you want, then the toppings you want on them. I highly recommend their hot peppers!! They also have salads, shakes, malts, and cookies. I didn't try the shake at this location, but I used to get the oreo one all the time -- it is very good.. but how can you go wrong with oreos and ice cream.. ever??
The location is cute -- very roomy and nicely designed. I went in the afternoon so it wasn't busy. The people are friendly and the service was pretty fast. Overall, a great place for a quick lunch. They also have breakfast options that look pretty good (breakfast sandwiches, oatmeal..etc), but I haven't tried them yet!