Romeo and Juliet: Poison the wedding cake.
Jane Eyre: Halfway through the ceremony, a deranged-looking woman in white runs screaming down the aisle.
The Great Gatsby: Reception is set casually around a pool with a body floating in it.
Pride and Prejudice: The groom begins his vow with 'Against my better judgments, I have fallen in love with you.'
Lord of the Rings: Destination wedding at a volcano; when the officiator asks for the rings to be presented, throw them into the lava.
Watership Down: Serve rabbit at the reception.
Catcher in the Rye: Tell everyone they're Goddamn phonies, but invite them to the wedding anyway
The Raven: Every line of the vows must end with either "Lenore" or "Nevermore."