Let the Right In is a vampire movie, one of the best I watched. It's very well done. Subtle and beautiful. The development of the relationship between the main characters is superb. I loved that film. Maybe as Japanese you can appreciate the atmosphere and tempo of the movie. Regarding Thesis is more a thriller than an horror movie. The director reached international notoriety after that movie and even directed some Hollywood ones. But for me, that's is his opera prima and the best from his filmography. Regarding Rob Zombie, he is a big American horror fan. His movies are kind of a tribute to the genre. At least it's how I perceive him. Maybe you lack of the context of his movies and that's why you don't like them?
I watched some Turkish movies, but non of them were horror, mostly the opposite, lmao. One is Honey (director Semih Kaplanoğlu) a movie that won the Golden Bear in the Berlin International Film Festival, I think also Milk or Egg, I don't remember well, and some others that I don't remember anymore. Turkish cinema has a crazy age when happened the Turkishploitation. There are Turkish versions of most of the famous American films.
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But I'm more fan of Korean movies than Turkish ones: 3-Iron, Save the Green Planet, I'm a Cyborg but It's OK, Old Boy, etc. There are still some notable movies like Memories of Murder or Sympathy for Mr. Vengeance, that I have not yet watched.
Yeah, the message was just a joke, but some people didn't get it! (;テ﹏テ)