When I plan a menu, I think as much about what to serve with the main course as I do the main course itself. A simple Roasted Golden Potatoes with Olive Oil and Rosemary is perfect with spit-roasted lamb. Or try Sauteed Spinach with Lemon and Pine Nuts with one of my favorite main courses - Pork Roasted the Way the Tuscan Do.
For inspiration, go to the farmer's market and see what fresh vegetables are in season. In the spring, it's asparagus and sugar snap peas and in the summer it's corn, eggplant, tomatoes, zucchini, peppers. Fall and winter bring all the delicious root vegetables like parsnips, carrots, beets, rutabagas, turnips, sweet potatoes. Don't forget about Brussels sprouts and all of the hard squashes that are so perfect this time of year.