Currently McCook and Katherine Kelly Lang are the show's two longest-serving actors, and both debuted in the first episode.
Kelly Clarkson | R. Kelly | Paul Kelly | Grace Kelly | Fritz Lang | Gene Kelly | Live! with Kelly and Michael | Paul Kelly (musician) | Kelly Rowland | Katherine | Katherine Jenkins | Andrew Lang | Ned Kelly | Katherine, Northern Territory | Kelly Pavlik | Kelly | Katherine Mansfield | Lang Lang | Kelly Ripa | Jim Kelly | Lang Lang (pianist) | Kelly Osbourne | Kelly Chen | Sam Kelly | Mary Kelly | Lorraine Kelly | Katherine Heigl | Joe Kelly | Frank Kelly Freas | Ellsworth Kelly |