Announcing to family on Thanksgiving. Help!

My husband and I are expecting our first. Our first doctor appointment is a week prior to thanksgiving. I should be 9 weeks on thanksgiving. His whole family as well as my whole family will be coming over. We plan on telling everyone together, but we are still unsure how! Any fun or creative ideas? We don't want anything cheesey. We have a family friend joining us for the meal, so we plan on quietly asking them to video tape the reveal.