For shell fish - I want somebody else to do all the work. These are not in order of preference - just how I typed it out. They are all top shelf in my book.
So:
Boiled, peeled and iced fresh shrimp with my cocktail sauce.
Fresh raw oysters opened in front of me.
Fried oysters done the right way.
Shrimp cocktail at a good Mexican restaurant.
Crawfish etoufee. Again, done right. Etoufee is especially sensitive to needing a cook who knows what's what in the kitchen.
Really meaty Maryland crab cakes.
Lobster Roll done the right way.
Lobster bisque with lobster bits.
Crab, shrimp and scallop enchiladas.
Crab dip - the kind served warm with spiced cream cheese. So long as there are plenty of Frito's Scoops.