What is the strangest movie you have ever seen?

I love abbarent film, and sometimes it seems the more unusual the plot is the better it gets. (well, in most cases I hated oldboy and Inland Empire) I want to know the most unusual movies you have come across. You don’t have to answer with just one, tell me the scariest, the trippiest, and the gorriest movies you know.

my favorites are…
Gummo
Eraserhead
Brazil
Cannibal Halocaust
Mullholland Drive
Lost Highway
Naroi (the curse)
Little Otik

and more, but I want to hear from you guys.