'ER': Where Are They Now? (PHOTOS)

Ingela Ratledge

It's tough to believe a full decade has gone by since ER, NBC's groundbreaking medical drama, aired its final episode on April 2, 2009.

For 15 seasons, viewers were swept into the frenetic hallways of Chicago's fictional County General hospital for a realistic gurney's-eye view of doctors and patients in the throes of every imaginable form of physical and emotional trauma. It was gritty, gripping, and a huge hit, spending multiple years the top of the ratings and winning 23 Primetime Emmys.

10 'ER' Episodes to Watch, 10 Years Later (PHOTOS)

10 'ER' Episodes to Watch, 10 Years Later (PHOTOS)

If you're jonesing for a return to the fast-paced medical drama, we've got you covered on where to start!

And while the series may be gone, its impact can still be felt — especially since former cast members continue to crop up all over television. Here's where you can find just a small sampling of alumni.

ER, Streaming now, Hulu