The Duke of York is a must, and around the corner is the Merchant Hotel, if only for a poke around.
If your eating, i recommend No 27(forget what street), but very good food.
Molly's yard, the hilden brewery, is only an eaterie, so no beer without food, and it's tiny with little chance of a table.
If your in the Crown Saloon, they have a pub crawl guide for all the victorian bars, worth doing.