I'm mixed on Oyster Boy. I came here once for dinner, and ended up having to wait for about an hour for a table. Then wait staff were rude, the food was not too good, and the night ended up with me having food poisoning.
Yet another time, I took the Shuck U class with Adam Coloqhun (sp?) and it was great, he is super knowledgeable on bivalves and a great teacher. Oysters were amazing too, it really makes a difference when a restaurant knows how to handle its oysters!
So all in all I'd say, come here for the oysters, but otherwise dinner could be hit or miss.