Not sure about top 5, but my favourite movie is Silence of the Lambs. By far.
The rest could be:
* Sen to Chihiro (Spirited Away is the US name, I think)
* Blair Witch Project.
* Esperando la Carroza (argentinian black comedy)
Then, I love the work of directors like Kubrik (fav: The Shinning), Tarantino (fav: Pulp Fiction), and Burton (confused here, Big Fish is a great movie, but the Burton always shines with Johnny Depp)