I super love movies, I think I am a movie-addict. But you see, I don't watch movies with my siblings. Because I have two little brothers and we don't have the same taste when it comes to movies. But I know I have watched a Disney movie with my youngest brother and I haven't watched any movie with my other younger brother. The only thing that we had watched together is *tanrantatatan* "Naruto".
Yeah, it is not a movie (but they sell the series on pirated dvds). But if I have to recommend some movie to watch with your siblings, try AVATAR. The love story behind this cool movie will make your sisters love it and your brothers will love it for the helicopters, guns and action scenes that is part of the movie.