Host Laura Theodore prepares variations on pizza. Special guests: Ed Begley Jr. and Dr. Pam Popper. Perfect for a casual party, "Polenta Pizza" features a gluten-free crust topped with ripe tomatoes, fresh basil, artichoke hearts and classic Italian seasonings. Tantalizing "Tortilla Salad Pizza" boasts a crispy crust, lively greens and "Vegan Almond Parmesan." Part pizza, part tart, "Jazzy Pizza Tart" is topped with roasted veggies and baked to perfection.(1 of 13)