I love ours. As others have said, chicken...whole and pieces, pork roast, beef roast. I love using the baskets for salmon fillets, porck chops, lamb chops and lobster tail.
Yes, I have done hamburges in the basket. I make them a good thickness, and I believe I cooked them for about 20 to 25 minutes. They came out great. DH loves hamburgers and really liked them.