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!!For the film:

* ActorAllusion: There's mention of vampire slayers. Creator/JamesMarsters had starred as Spike in ''Series/BuffyTheVampireSlayer'', while Hilary Swank had starred in the [[Film/BuffyTheVampireSlayer film version]].
* CreatorBacklash: Gerard Butler apologised to Irish viewers for his appalling attempt at an Irish accent.
* FakeIrish:
** Scottish Creator/GerardButler plays an Irishman.
** American Creator/JeffreyDeanMorgan plays William [[spoiler: Gerry's childhood friend]].
* PlayingAgainstType: Hilary Swank is normally TheDeterminator or an IronWoobie. Richard [=LaGravenese=] (who had directed her as such a character in ''Film/FreedomWriters'') wanted people to see a lighter side to her.
* StarDerailingRole: Creator/HilarySwank was unlucky enough to star in this and ''Film/TheReaping'', the failures of which saw her star power fading. The critically savaged bomb ''Amelia'' didn't help matters.
* ThrowItIn: Holly was supposed to lip-sync to the song. But after a few takes, they had Hilary Swank sing it badly instead.

!!For the book:

* SequelGap: The book has a sequel, but it came out no sooner than 15 years (and 14 other, unrelated, books published by the author) later.
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