You can find loose Chicken livers at Berkeley Bowl, where they fish them out of a tub with a hook. You can also find them at Safeway, where they are sold in a small container. Either way, they are inexpensive. Expect to pay about $2.50 for them.
Typical preparations involve browning both sides of your livers in olive oil, and seasoning with salt and pepper.
The livers add depth and creamy texture to Beef and Chicken Liver Ravioli, and can easily be turned into a Pate.
Mario Batali maintains that Italians would find it unthinkable to eat a chicken and not its organ meat. Not surprisingly, of the 50 recipes for Chicken Liver over at FoodNetwork.com, Mario accounts for 18.