Here is a Burger King commercial with the Simpsons. You’ll notice its a tie-in with the simpsonizeme.com website. I like the commercial because its just fun, plus Ralph is in it.
Besides being a fun commercial, you can use it to talk about change. How do people see us differently when we change our attitude or a habit? When you become a Christian do you change so people notice? Is your change just on the surface? Have you truly become a new creation? Do you look more like Christ?