Here's what I think... Make sure to include the names of the bride and groom and the date -- I look at wedding programs as you would a historical document. Your children, grandchildren and great-grandchildren may stumble across a copy of it when they are filling out the family genealogy information and they need to know your anniversary date! You wouldn't need to include the order of your ceremony, but instead you could list the events of the reception. Probably something along these lines:
* Cocktail Hour (some people have this -- some don't!)
* Introduction of the Family (bride's parents then the groom's parents)
* Introduction of the Wedding Party (I would suggest including their names and possibly a brief description of their relationship to you, or even a sentence or two about each of them, make sure to include the flower girl and ring bearer)
* Presentation of the Couple
* First Dance
* Blessing
* Food Service
* Toast by the Best Man (and possibly others...)
* Mother and Son Dance
* Father and Daughter Dance
* Garter and Bouquet Toss
* Cake Cutting
* Exit
It would also be appropriate to include a special thanks to your family and guests as well as your new "at home" address. A poem or verse would be a nice touch as well.