Does your school district have one of those cool licenses that allows you to show movies without violating copyright? (Or do you just have a principal that looks the other way?)
If so, then you could probably use these 22 science questions that follow along the action in "Wreck-It Ralph." They are in order, and it is suggested that you stop and discuss answers as you go. Also, the questions are on three pages which should correspond to 40 minutes of viewing time for the first 2 and about 20 for the last.
They cover all areas of science and the questions are targeted at a middle school audience. Perfect for an end-of-year review in 6th, 7th, or 8th grade!