I stole this from Savecraig, but it's so cool that I thought I'd share it with you.

In Back to the Future II, Marty McFly sees a sign saying the Cubs beat Miami for the World Series, sure they're not going to play Florida in the World Series, but kind of weird since there wasn't a Florida team when the film was made, also Back to the Future II takes place in the year 2003, more weird.

In the movie Demolition Man, Wesley Snipes and Sylvester Stallone talk about Governor Schwarzenegger...even weirder.

In Arnold Schwarzenegger's first movie Pumping Iron, which was made in the late 70's, people in the film tell Ah-nold he's going to be Governor of California some day and his reply "sure I'll be governor of California, after Ronald Regan becomes President"...most weirdestest