1. Programmeable Rice Cooker
http://www.buy.com/pr/product.aspx?sku=208096711
This one and similar ones cooks rice and other foods in slower and delicate ways so they are more delicious than those cooked with regular ones. If you are a busy person, you may use the programming capability a lot.
2. Electric Pressure Cooker
Will considerablly reduce the cooking time for those food normally taken a lot of time such as shao rou, lu rou, steam rou, etc.
3. Convection oven
Can make many foods in energy saving and healthy ways.