These are some fantastic predictions I've heard:
+ March 7, 2007: MMORPGs will destroy TV "in short term". Said by Daniel James of Three Rings, a game developer.
+ March 7, 2007: Social networking sites will all be 3D in five years -- said by Mark Kern of Red 5 Interactive.
+ January 2007: The internet will revolutionize TV in five years, according to Bill Gates.