216429.
I used to hang out with them a lot since we were all little. My sister and I, because of how much we spent together, sort of all have the same interests because of it. My brother not so much because he normally does his own thing but we still chat over a few things and still share the same opinions on books, movies, etc.
But seriously when my sister and I are on the same page on something, such as being really into something, then we're practically inseparable.