Thanks for the responses, we are paying for a nice dinner.  It is the "team building" part I am trying to work out.    We are going to have about 20 people attend, I am thinking of before the meal pulling a desert bar, teams of 4 or 5 will have to create some corporate theme (logo, a project, one of our products) made with.. brownies, ice creams, sugar condiments, etc.   in a big pan.  Then our department head can pick the winner and after dinner is done, the winning dessert will be presented.

That is what I am leaning towards, but haven't made my mind up.  But you can see it is "at the restuarant" type event ideas I am looking for.

Thanks for the input so far, if you have any other ideas, let me know.