I find it if often the people who know the least about something that make the most intersting points on them.
On The Phantom Menace:
“Wait that is Darth Vader as a kid? Why who cares?”
“Oh so he only has special powers on Mars because he is from Earth, like Clark Kent in reverse.”
Prometheus:(Ok they had seen Aliens but not the original)
“WTF did the beginning mean, what did that mean, WTF was with…”
And after explaining the backstory from Alien they said “Ok these terms you keep using are confusing, facehuggered? Space Jockey?”