Making copy editors everywhere slap-happy?

From a review of "Kiss Kiss, Bang Bang," in the Denver Post:

Writer-director [Shane] Black became a Tinseltown legend when as a very young man he wrote "Lethal Weapon." "Kiss Kiss, Bang Bang" is the more than confident directorial debut of a scribe still thrilled with words. A running gag about grammar and the quirks of adverbs will make copy editors everywhere slap-happy. And any movie that uses the famously misused "nonplus" and makes a joke of the pluperfect is a flick that enjoys language.

I don't plan on seeing this movie, so someone else will have to tell us if the review is accurate.