by Matt StoperaBuzzFeedBuzzFeed Staff We've seen a lot of people remember Catherine O'Hara for her roles in Home Alone. (C)20thCentFox/Courtesy Everett Collection Other people bring up her role as Moira Rose in Schitt's Creek. Everett Collection But real ones recognize just how iconic she was in one of the greatest comedies of all time(!!!), Best in Show. (C)Warner Bros/Courtesy Everett Collection In case you somehow haven't seen it, Catherine played the one and only Cookie Fleck who enters her Norwich Terrier, Winky, into the Mayflower Kennel Club Dog Show.