In the movie Ruby in Paradise, Ruby (Ashley Judd) gets this book from her boyfriend, and ends up liking it.
Literature
Atonement has a preface with an extract from Northanger Abbey, likening Briony's imagination to that of Catherine Morland.
The Incredible Crime by Lois Austen-Leigh (Jane Austen's great-great-niece) has a professor quote a passage from Northanger Abbey, attributing it only to "a country parson's daughter".
In The Nebuly Coat, Anastasia is a Wrong Genre Savvy Austen fangirl who's reading Northanger Abbey when she first meets Lord Blandamer.
In There's More Than One Way Home, Anna compares Alex's post-separation lifestyle to General Tilney - a man who cares more for dinner than his son, whom he leaves to wander the house alone.