This 1998 romantic comedy is based on the 1995 novel of the same name by Alice Hoffman which I can't believe I've never actually read. I really ought to sort that out!
Here's the general gist of the movie, if you haven't seen it:
Sisters Sally and Gillian Owens have always known they were different from each other. Raised by their aunts after their parents' death, the sisters grew up in a household that was anything but typical - their aunts fed them chocolate cake for breakfast and taught them the uses of practical magic. But the invocation of the Owens' sorcery also carries a price - some call it a curse: the men they fall in love with are doomed to an untimely death. Now adult women with very different personalities, the quiet Sally and the fiery Gillian must use all of their powers to fight the family curse and a swarm of supernatural forces that could take away all the Owen's lives. (Source: Wikipedia)
Not only is it a fantastic movie, but it also has a fantastic soundtrack, one which I often listen to when I'm writing. It's got a real inspirational feel... especially for writing fantasy.
Here are some more videos... check them out and listen to those fab songs!