A close-up of a celebrity's face can be seen. The celebrity asks two questions relevant to the game, and it cuts back to a family, or a group of friends that reply "Yes" or "No". Upon the third question, the celebrity will ask "Am I _____?", and whilst the third question is being asked, we zoom out to reveal that the celebrity's head is on a completely contrasting body, such as a small child's, someone of the opposite gender, or even an animal's body. We also see a montage of the other people with completely contrasting heads to their bodies.
Here's an example.
A close-up of singer Ricki-Lee Coulter is shown. She asks "Am I a famous singer?" It then cuts back to a family, that says, "Yes". She then asks, "Have I been around in the past few years?" The family says yes again. She then asks "Am I Ricki-Lee Coulter?", and we zoom out to reveal that Ricki-Lee's head is superimposed upon the body of a nine-year old girl.
The product is then advertised. We also show a montage of the family members with various celebrity heads (the dad has Brett Lee's head, the mother has Jennifer Hawkins' head, the teenage girl has Dean Geyer's head, the boy has Cariba Heine's head)
For those of you (mostly outside Australia) who do not know who any of these people are, Google is your friend. As is Wikipedia.
Also, my one was just an example. Feel free to suggest your own celebrity heads. Remember, the bigger the contrast between head and body, the better.