When my niece was staying with us I let her help plan our first movie night. We tried to keep it simple and not go too extreme (which is easy to do). We had so much fun that this is now something I want to do once a month.
Dinner: Chili Dogs...or plain hot dogs for the younger ones.
Movie: We went to redbox and rented Cop Dog.
Picture from here
Movie Snack: We passed out some Puppy Chow that we made earlier that day. The kids were going crazy that they could not eat it right away and were probably even more excited for the movie because of the addition of a treat!
Enjoy your own movie night! I would love to know what you do.