Wow. Either Shonda Rhimes is ready to do the unthinkable or she really, really enjoys messing with Grey's Anatomy fans. Perhaps both?

Either way, a shocking sneak preview from the Season Five premiere of Grey's Anatomy, "Dream a Little Dream of Me," has surfaced.

Many of our readers have been expressed the opinion - in response to this week's thought-provoking Grey's Anatomy spoilers - that the scene first hinted at in the now-infamous promo takes place in a dream, or in Meredith's imagination.

But this eliminates any doubt that it does in fact take place. And it's not pleasant.

Take a look below, then sound off and tell us what you think ...

[youtube]http://www.youtube.com/watch?v=Pfen9k1ix24[/youtube]

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.