Wood ducks, mallards, teal, and gadwalls are mostly what I cook. I don't get my hands on much else that's edible. Sometimes we'll kill a Canada goose that's actually migrated from up north, and those are also tasty. The local geese that hop around to neighboring waterholes after eating lots of lawn grass heads are quite nasty, and I don't care to eat those at all. They literally smell bad inside.
That said, one of my favorite things to cook several times per year is pluck out a couple bigger birds (mallards are great for it, especially if they are plump) and use a hand torch to burn off the little pin feathers. If serving to folks you are trying to impress, pick birds that have been shot in the head and have no big holes in the body. Then I marinate the ducks in a mixture of teriyaki, soy sauce, and garlic. If you like extra sweet flavor, you can kick in a touch of honey. I put the birds in a smoker at about 230 degrees for roughly 2-3 hours, or until internal temperature on the breast meat hits around 135 F or so (remember, these are wild birds and haven't been wallowing in poop like domestic fowl). At that point, I pull out the birds and baste them again in the sauce, and then pull that torch back out. I run the torch over the marinated parts to caramelize the sugars and crisp up the skin - that process takes perhaps 1 minute per bird.
It's a fun way of cooking, and the appearance is awesome due to the dark color of the skin after that kind of cooking. Whatever you do, don't overcook duck meat or it magically takes on the flavor of tough liver, and no one will like you for it.
If you are serving people that will not tolerate the appearance of reddish meat, then poppers or bacon-wrapped options are good for that. If doing bacon-wrapped duck in the oven, I suggest pre-cooking the bacon about 50% of the way so that you have a nice crispy outside by the time the duck is done. If you're doing it on the grill (higher temperatures), raw bacon is probably fine. Just marinate the meat first.
For ducks with mediocre flavor, you might try cubing up the breast meat into gumbo or other dishes with a stronger flavor. I've tried this with a common merganser, and it ruined the pot of gumbo...that's my experience with those things :)
Leftover duck carcasses are not a bad source of broth, if you are just looking for stuff to throw in a pot with some vegetables and cook way down.