It is a tragedy that PJ Dudt's has such a poor web presence. This place has the best butter cream icing on Earth. I'm not exaggerating. It will haunt you. The recipe is also a trade secret, from what I understand. (From their 1990's-style website: "This guarded secret which has been handed down from generation to generation is often imitated but never duplicated." And from personal experience, they are sadly correct.)
Try one of their cookie cakes with balloons on it. You must.
Their service might be poor (though I've never had a problem, and the bakery has been making cakes for my family's special events since I was a kid), but for god's sake, who cares when they are the only place that makes that icing.
Note: do not mix up this Dudt's with the other (H.D. Dudt's) on Route 19; they are separate companies, and the other Dudt's does not have the same products.