Grey's Anatomy wouldn't be Grey's Anatomy without the wacky medical cases, and it looks like Season 9, Episode 8: "Love Turns You Upside Down" (airing tonight, December 6) won't disappoint on that front. In this sneak peek of the episode, two guys burst into the ER claiming they've shot Bigfoot. Yes, that Bigfoot. Has a legendary creature come to Seattle Grace-Mercy West? Check out the sneak peek below!