ER has 15 seasons.

ER has 331 episodes.

The key characters in ER are Kerry Weaver (Laura Innes), John Carter (Noah Wyle), Abby Lockhart (Maura Tierney).

ER was directed by Christopher Chulack, Jonathan Kaplan, Richard Thorpe, Stephen Cragg, Lesli Linka Glatter, Laura Innes, Félix Alcalá, Mimi Leder, Christopher Misiano, John Wells, Paul McCrane, Andrew Bernstein, Charles Haid, Nelson McCormick, Rod Holcomb, David Nutter, Anthony Edwards, Tawnia McKiernan, Julie Hébert, Thomas Schlamme, James Hayman, Babu Subramaniam, Alan J. Levi, Paris Barclay, Fred Gerber, Jack Orman, Ernest R. Dickerson, Arthur Albert, Anthony Hemingway, Terence Nightingall, Darnell Martin, Elodie Keene, Steve De Jarnatt, Lance Gentile, Gloria Muzio, Marita Grabiak, John Gallagher, Jacque Toberen, Tom Moore, Ken Kwapis, Vondie Curtis-Hall, Peggy Rajski, Steve Shill, Skipp Sudduth, Joanna Kerns, Donna Deitch, David Zabel, Quentin Tarantino, Peter Markle, Rob Hardy, Guy Norman Bee, Jessica Yu, Mark Tinker, Whitney Ransick, Eric Laneuville, Barnet Kellman, Eriq La Salle, Perry Lang, Fred Einesman, Anita W. Addison, Davis Guggenheim, Vern Gillum, Dean Parisot, David Chameides, Kevin Hooks, Michael Katleman, Daniel Sackheim, Jesús Salvador Treviño, Sarah Pia Anderson.

ER was produced by Penny Adams, Virgil Williams, Paul Manning, Patrick Harbinson, Christopher Misiano.

The doctors who work in the ER at the County General Hospital in Chicago grapple with ups and downs in their personal and professional lives while trying to give apt medical care to their patients.

ER is rated TV-14.

ER is a Drama, Romance show.

ER has an audience rating of 8.7 out of 10.

ER episodes are 45m long.

No, this show was canceled after 15 seasons.