crazy - dreaming the future?

okay so this is really weird i know, and this probably isnt the place to ask about it but it's something that's been bugging me for quite a few months now and it's getting more and more frequent and vivid. so i've been experiencing a sort of extreme deja vu thing, in which i'll have a dream, remember it happening, and then consciously witness the event later in time. it isn't quite like deja vu though, in which you get a sense that something has happened before. i'll give a few examples - a few months ago, i dreamt a person at my church told a really weird joke that made no sense, and a week later, everyone ended up standing in the same place they were during my dream and i knew the person was going to tell the joke, and i knew the answer. if that's not enough, about a week ago I had a dream about a tv show that i dont watch and hadnt aired yet. last night, i was channel surfing and saw the scene, knew what was going to happen in it, even knew the character's lines before they said them. i know it's probably completely normal, but it's been happening so much lately, probably twice a week, and i remember everything so vividly I can hardly believe it myself. can someone explain why or explain similar experiences?