Which restaurants do you go to/drive past that are regularly lined up or crowded? I'm looking on this as a positive for the restaurant, not that it necessarily serves excellent food--it may be just mass appeal.
I live near Grazie (Yonge and Eg)and it regularly has people waiting outside. Also, Burrito Boyz can be crazy if you hit just the wrong time. Dutch Dreams (ice cream at St. Clair and Vaughn Rd.) has great lines on hot summer nights.