Continuity mistake: When Sara takes a taquito, she grabs it with her left hand, then puts it in her right hand and starts to eat it. But in the next shot, the taquito is back in her left hand.
Continuity mistake: When Sarah grabs a taquito, she uses her left hand, then switches it to her right hand to bite it. In the next shot it's back in her left hand.
Joel Hammond: Okay, we say we came across this murder site and we're just cleaning it up.
Sheila Hammond: Who cleans up murder sites?
Joel: I don't know. We're Mormons?
Sheila: Mormons don't clean up murder sites.
Joel: Mormons are helpful.
Trivia: At the comic book store, when Eric and Abby are talking, there is a "Plants vs Zombie" comic on the rack in front of them.