Say you're having a conversation with a close friend or relative. Suddenly, you think of something that is closely affiliated with the discussion at hand and decide to voice it. Just as you do, the other person says something startlingly equivalent to your own idea. Before this, you had never said anything akin to what you had just said and the other person hadn't said anything on the matter either. This is an occurrence I like to call the Dreamcatcher Effect.
Now, for those poor, misguided souls who haven't experienced that little bell in the back of your head ringing at the word 'Dreamcatcher', I'll fill you in.
(WATCH OUT: Near be spoilers.)
Dreamcatcher is a book, and then film, where four boys, Henry, Jonesy, Pete, and Beaver(no, that's not his real name, but that's not the point), are on their way to a warehouse when they find a Scooby Doo lunch box and some discarded clothing on the ground. At first, they shrug it off, but then they hear some crying. When they arrive at the source, they find these older guys on the high school football team trying to force a slow kid to eat dog crap. Yes. I know. Jerks, right? Anywho, after a little confrontation, the older guys leave and the four help the kid out.
Couple years later, there's a girl that went missing and so the four, plus Duddits(once again, nickname, but whatever), the slow kid, find her by making this thing they call the Dreamcatcher. They all linked hands and Duddits did this weird thing that causes Henry, Jonesy, Pete, and Beaver to gain abilities. One of these is the ability to read thoughts, which is what is associated with the Dreamcatcher Effect, seeing as, throughout the book and movie, they tend to unintentionally and unknowingly read other people's thoughts.
Now, for fear of ruining the whole book/movie, I won't say anymore. :D