What is that stuff called they put over cakes Its like fondue or somthing right?

It sounds like you might be thinking of ganache. It's a rich, chocolate-based topping often used for cakes, but it's not exactly like fondue. Here's why:

* Ganache is a mixture of chocolate and cream, usually heated and then cooled to a spreadable consistency. It's used as a topping, filling, or frosting for cakes.

* Fondue is a melted cheese or chocolate mixture that is traditionally served in a pot over a heat source, and people dip bread, fruit, or other foods into it.

While both ganache and fondue involve chocolate and heat, they have different purposes and consistencies.

Do you have a picture or a more specific description of what you saw? It might help me identify what you are thinking of.