Best on the grill, but since it's cold here, I made them in the oven on Sunday for my girlfriend and I to enjoy during the Giants/Packard game.
So if you're using the oven, cook them at 250 degrees for about three hours. They came out really well. And very, very easy.
By the way, here are some other chicken thigh recipes that sound interesting, although I haven't made them so can't vouch for them: http://allrecipes.com/recipes/meat-and-poultry/chicken/chicken-thighs/
Skinless thighs??
What are you? a Communist?
Michelle Obama?