I personally find Siren "weird," but in a different sense. Psychological horror is usually my forte (I'm a Silent Hill nut), but I do like it. That being said, the cutscenes really weird me out. They look like they're emulating film in 8fps, so everything is really choppy and definitely not humanlike. There are also slightly bad British actors doing voice overs for the Japanese characters, and it just gives a really unsettling effect - more than the gun-toting zombies in the game for me.
