"The Brussels Cut" of Hideo Nakata's 1998 cult-classic Ringu is said to be an alternate version of the movie that was shown at the Brussels International Festival of Fantasy Film in 1999, for the film's European premiere.
The alleged different between the two is that in the Brussels Cut, the mouths of the victims are much more vertically deformed, creating a much creepier effect.
Director Hideo Nakata, when asked about the subject denied its existance, although Javier over at curseofthering.com (formerly known as theringworld.com) has received multiple emails from people claiming to have seen the Brussels Cut through various means. There are also a few people online claiming to have a copy. It is still unknown if the film is indeed non-existant, or if it does exist, as so many claim, and that Hideo Nakata is trying to cover up its existance for his own reasons.