We made Julia Child's famous Boeuf Bourguignon (aka Beef Burgundy). Our guests loved it. It takes about 5 hrs to prepare from start to finish. 3 hrs of that time is cooking in the oven but part of that time is needed to prep the onions and mushrooms which are cooked separately.
I got the recipe here. I found this format a little difficult to use while cooking. I later found Julia's original version straight from her book here, and its much easier to use while cooking. I can't believe no one's copied this format for recipes before, its so simple yet so easy to use.