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

ER was produced by Richard Thorpe, Lisa Zwerling, Penny Adams, Virgil Williams, Paul Manning, Bruce Miller, Lance Gentile, 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 8.8 out of 10.

ER episodes are 45m long.

No, this show was canceled after 15 seasons.