'The Strangers' (2008)
The Plot: A couple is stalked by a group of anonymous masked killers in a secluded house.
The Claim: "Inspired By True Events"
The Reality: Writer/director Bryan Bertino claimed the film was based on an event from his childhood in which a group of burglars cased homes in his neighborhood by knocking on the front door...while presumably not wearing doll masks.
The Verdict: The tagline should have read, "Inspired by True Events from Bryan Bertino's Childhood That Are Nothing Like What Happens In This Movie."
Sources: Hollywood Jesus