WILBURiffic!
Wilbur Mexicana is a very busy taco and burrito place on King St W that features a variety of Mexican fast food. They also feature a salsa bar with 8-10 different salsas you can load into a small container to use at your table of takeout.
There are one page menus on clipboards that people can use to select their food while waiting in line. I had the Tinga, Asada and Baja tacos which come with some nacho chips that are perfect to sample the salsas.
Walking by at noon time you'll see a line-up out the door. They have several communal tables but many people choose takeout and that's what makes the line long. After 2pm, the crowd thins out and you can enjoy your food at a high top while using their free wifi and listening to some cool music.
The tacos were great and seasoned perfectly. This will definitely be one of my staple fast foods when I'm in the area.