I've eaten there a few times (great lunch option for working down the street). There's a good bison burger at the place in the far back right corner. There are also very good freshly fried (though still from a bag) sweet potato fries at the crabcake stand to the right of the bison burger place. The crabcakes are just average.
I really like the idea of the place -- good variety, fresh baked goods, Pennsylvania Dutch "homey" feel. I've been there on Friday nights and seen the crowds taking advantage of the $6.99 AYCE specials (rotating each week), but have not eaten the AYCE special myself so can't comment on the quality.