Last night on Grey's Anatomy, the ongoing diagnosis of "Patient X" finally came to a head, while McDreamy lost it and spiraled out of control. Will Mer be there to pick him up?

If you missed any of "I Will Follow You Into the Dark," or just want a refresher, or to relive the drama, follow the link to check out our site's official recap of this great episode.

Grey's Anatomy videos and pictures from the episode are live. Our music guide is also up for your perusal, with our list of the night's best Grey's Anatomy quotes in progress.

We'll update you on news and Grey's Anatomy spoilers as soon as we hear anything. As always, our forum is open for discussion, and comments on all posts are encouraged!

What did you think of Grey's Anatomy last night? Tell us!

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