ER SHOT IN REAL TIME-- RAY LIOTTA GUEST STARS -- In a ground-breaking episode which traces the real-time events in the emergency room, Kovac (Goran Visjnic), Abby (Maura Tierney) and Sam (Linda Cardellini) try to save the life of Charlie Metcalf (guest star Ray Liotta), a man who comes in complaining of a stomach ache, but is later diagnosed with far, far worse. Mekhi Phifer and Shane West also star. TV-14