NBC renewed "ER" for a 15th and final season in April. Combining the extraordinary talents of multiple award-winning producer John Wells ("The West Wing" "Third Watch"), best-selling author Michael Crichton ("Jurassic Park") and the creative team at Steven Spielberg's Amblin Television, the venerated series "ER" explores the inner workings of an urban teaching hospital and the critical issues faced by the dedicated physicians and staff of its overburdened emergency room. Currently beginning its 15th season, the highly acclaimed drama series now holds the distinction of being recognized as the most Emmy-nominated series in the history of television with 122 nominations. Crichton, Wells and Zabel serve as executive producers, along with Christopher Chulack, Joe Sachs and Janine Sherman Barrois.

A winner of the prestigious George Foster Peabody Award, the series has also earned 22 Emmy Awards, including Outstanding Drama Series in 1996, among many accolades. In addition, the cast has been honored with four Screen Actors Guild Awards for Outstanding Ensemble Performance in a Drama Series.

The long-running series stars Maura Tierney ("Diggers," "Welcome to Mooseport,"), Mekhi Phifer ("Dawn of the Dead," "Curb Your Enthusiasm," "8 Mile," "Slow Burn"), Parminder Nagra ("Ella Enchanted," "Bend It Like Beckham"), Linda Cardellini ("Brokeback Mountain, "Scooby-Doo" films, "Grandma's Boy," "Freaks and Geeks"), Scott Grimes ("Band of Brothers," "American Dad," "Party of Five," "Mystery, Alaska"), John Stamos ("A Raisin in the Sun," "Jake in Progress"), David Lyons ("Blue Heelers") and Angela Bassett ("Akeelah and the Bee," "What's Love Got To Do With It").

On staff at County General Hospital are Abby Lockhart (Tierney), a recovering alcoholic trying her best to juggle a demanding residency and motherhood while everything around her seems to be falling apart; Dr. Greg Pratt (Phifer), an attending fighting for the chief spot on the floor as well as for a firm grasp on his love life; Neela Rasgotra (Nagra), a skilled surgical resident committed to growing in her craft as well as in her place on the surgical team; Sam Taggart (Cardellini), a spirited ER nurse who is finally getting some time to explore life and love both in and outside the hospital; Dr. Archie Morris (Grimes), the quirky-yet-talented attending dedicated to his work but constantly distracted by his own world; Tony Gates (Stamos), a paramedic-turned-doctor who has overcome numerous obstacles to take on the rigorous challenges of life in the ER, Dr. Simon Brenner (Lyons) the newest attending physician with a penchant for stirring things up, and Dr. Cate Banfield (Bassett) as a tough-as-nails attending physician whose arrival shakes up the ER.

"ER" is a production of Constant c Productions and Amblin Television in association with Warner Bros. Television.