The Greek Gourmet is the go-to place for hummus. Forget Trader Joe's, forget Whole Foods, definitely forget Giant Eagle. All their hummus is made in-house (yes apparently there's a difference between something made in-house and something that's housemade; housemade can be made in someone else's house). They have their hummus out for you to try before you buy it. Apparently they also are one of the sources of hummus for Whole Food's, as they were out of their smoked white bean hummus the last time I went (its absolutely delicious and the smokiness reminds me of a summertime cookout).
Most of their pastries are made in-house; their meat, cheese, and spinach pies are shipped in though.
They also have other things like pastas and olive oils and what not, but I'm always drooling over their prepared foods to notice anything else.