Severenski sends us a description of the AOTC TV spot:

There was a group of kids in the theatre, along with a man. All the kids are eating the cereal. We see that one of them is wearing a Clone Trooper helmet. When the man asks the kids to be quiet, we see the entire group of kids, all eating the cereal, all wearing Clone Trooper helmets, and all munching at the same time. They also advertised the free rubiks cubes in the otehr Kelloggs cereals.