So Astroboy is out. Sorry i suggested it, i had no idea. Shopping seems like a popular option. Just remember the mall will be crazy the weekend before Christmas. So now the question which mall? I personally think Cherry Creek Mall would be best. Central location. If you have a better idea for something to do mention it.
While Avatar seems like an option i don't know how many people are up for it, either way we could find a restaurant nearby afterward to eat together at.
Remember to vote for which day is better for you.