It's Korean fast food. It's cheap, it's fast and it tastes great.
You don't go there for the atmosphere. But if it's a choice between the typical North American version of fast food (Rotten Ronnie's or whatever you care to insert here) and this, then there really is no choice. The price is probably about the same, the food is far better at Yummy BBQ and there is actually some nutritional value (it's not the exclusive salt, fat and sugar that is contributing to the ballooning North American morphology).
I go there for a bibimbap once in a while.
There's also a location in the Crossways at Dundas West. Same deal.