Turkey burgers can be so blah - dry, flavorless, especially if you make them with virtually fat free turkey breast meat with no skin ground in. But these from Martha Stewart are consistently delicious.
I usually subtitute a slice of chopped-up bread for the dry breadcrumbs because I think that the dry crumbs make the burger dry. I always make them with the leanest turkey I can get. Last night I used the heel of a whole-wheat loaf and they came out great. Be careful not to cook the heck out of these. We don't eat them on buns with condiments, we eat them straight up, with a salad and veggies on the side. But they would be delicious on a fresh bun, too.