the rudder on rocky neck is lovely - their fried clams are yummy if you're in the mood! the owners are so nice, and are always there greeting the guests.
(it's not a clam shack kinda place, it's actually quite a nice restaurant, just happen to have good clams!)
let's see, also on rocky neck - sailor stans for delicious breakfast
if you are in gloucester harbor - there are tons of places downtown (nost right on main street- franklin cafe, passports, jalapenos(great mexican), valentino's (pizza), white rainbow (fancy)...there are lots of new places as well that i haven't been to yet.
have a great weekend!