"Stand up, lady!" -child to a drowning Jodie Foster in Nim's Island.
"Look at all that ketchup." -dude at House of Flying Daggers.

"This is the defining moment of my life." -young man at a sneak preview of Jay and Silent Bob Strike Back.
"Ugh. That is vile." -lady after Daniel Plainview calls Eli Sunday "afterbirth" in There Will be Blood.
"That will teach us to go to the movies on a Sunday afternoon." -one dude to another dude walking out of A History of Violence.*
"THEY'RE GONNA DO AVENGERS!" -40-something bald dude w/ ponytail and children at the conclusion of Iron Man.
"Jesus!" -repeated 3-to-4 times by the young man sitting next to me at The Lion, the Witch and the Wardrobe.**

*to this day the most confusing thing I've overheard at a movie theater
**the young man later witnessed to me in the parking lot and invited me to his church.