The O.C. - Season 4, Episode 12 - "The Groundhog Day". Sure, you may have watched television shows featuring one girl in a groundhog costume. You may have even seen two groundhog costumes in some weird show. But I defy you to find another episode of television that features three ladies in groundhog costumes. This episode truly has everything. Kirsten turns 40 and gets a surprise - both from the doctor and Sandy. Che tries to decide if Seth is his soulmate. Meanwhile, Taylor pops her head out to decide if she sees her shadow or not to determine if we get three more months of being single.