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

ER was produced by Richard Thorpe, Joe Sachs, Tommy Burns, 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.