Northanger Abbey by Jane Austen. This book/movie is very light-hearted, though not as witty as some of Austen's other works. Henry Tilney, however is a much more agreeable person than, dare I say it, Mr. Darcy? Also, Tilney understands muslin. : )
Persuasion - another fabulous adaptation of a Jane Austen novel. So many wonderful subtleties in the performances given by the leads in this film. My favourite portrayals of Anne and Captain Wentworth ever!