Sababa is in my backyard and I have been coming here for years, I never really go into the restaurant I always go to the counter and the back of the grocery store.
They are famous for their falafel which is a great tasty, quick and cheap lunch item. I also get their lentil soup on cold days cause its delicious. They bake all of their pita fresh in-store and have an amazing selection of dips such as hummus, baba ganoush etc. They allow you to sample them before you buy and their service is pretty quick. Their Moroccan cigars are pricey but really crispy and fresh.
You order at the back and they will put the $ amount on the bag, you can then shop around a little more and pay at the front.
I would recommend getting their hot sauce on the side with the falafel for extra flavour!