We just finished dinner, and I'd say it turned out pretty good. For the marinade I chopped up some rosemary and garlic, added salt and pepper, a splash of balsamic vinegar, a tablespoon or so of mustard, some honey and I let the roast and accompanying veggies (bell peppers, mushrooms, potatoes and onions) sit and marinate for an hour or so. Nom! Thanks for the ideas, you guys!