What's for dinner?

Next week is Christmas, of course, and the family will gather at chez nous for dinner. The past two years I have made a rib roast that is excellent (using the recipe the good folks at America's Test Kitchen recommend -- this recipe is premium content, so sign up for the two week preview to get it, or just pay the $20 for a full year). I want to continue to support local producers, but it looks like my vendor of choice won't have the beef hung in time for Christmas, so I may end up making a leg of lamb, which I know my dad loves. Now I just need a good recipe...