Season 1 (1994)

7.98 avg 25 episodes 8.6 → 8.3 52 min avg

Season 1 episodes — IMDb ratings
#	Title	Rating	Votes
1	24 Hours	8.6	2,891
2	Day One	8.0	1,165
3	Going Home	8.0	973
4	Hit and Run	7.9	865
5	Into That Good Night	7.9	856
6	Chicago Heat	7.8	815
7	Another Perfect Day	7.7	782
8	9 1/2 Hours	7.6	774
9	ER Confidential	7.9	800
10	Blizzard	8.7	1,125
11	The Gift	7.9	797
12	Happy New Year	7.8	702
13	Luck of the Draw	7.7	706
14	Long Day's Journey	7.9	756
15	Feb 5, '95	7.9	704
16	Make of Two Hearts	7.9	695
17	The Birthday Party	7.7	673
18	Sleepless in Chicago	8.0	723
19	Love's Labor Lost	9.3	1,873
20	Full Moon, Saturday Night	8.0	815
21	House of Cards	7.7	655
22	Men Plan, God Laughs	7.7	648
23	Love Among the Ruins	7.8	700
24	Motherhood	7.8	946
25	Everything Old Is New Again	8.3	730

Season 2 (1995)

7.93 avg 22 episodes 7.8 → 8.3 49 min avg

Rollercoaster
Mid-peak

Season 2 episodes — IMDb ratings
#	Title	Rating	Votes
1	Welcome Back Carter!	7.8	689
2	Summer Run	7.6	624
3	Do One, Teach One, Kill One	7.8	643
4	What Life?	7.8	601
5	And Baby Makes Two	7.9	609
6	Days Like This	7.8	607
7	Hell and High Water	9.1	1,477
8	The Secret Sharer	7.8	605
9	Home	7.7	608
10	A Miracle Happens Here	8.0	627
11	Dead of Winter	7.7	594
12	True Lies	7.5	592
13	It's Not Easy Being Greene	7.8	587
14	The Right Thing	7.8	588
15	Baby Shower	8.1	609
16	The Healers	8.7	887
17	The Match Game	7.6	582
18	A Shift in the Night	8.6	832
19	Fire in the Belly	7.6	563
20	Fevers of Unknown Origin	7.8	580
21	Take These Broken Wings	7.6	610
22	John Carter, M.D.	8.3	638

Season 3 (1996)

7.92 avg 22 episodes 8.0 → 8.2 52 min avg

Season 3 episodes — IMDb ratings
#	Title	Rating	Votes
1	Doctor Carter, I Presume	8.0	621
2	Let the Games Begin	7.6	567
3	Don't Ask, Don't Tell	7.7	600
4	Last Call	7.8	592
5	Ghosts	7.6	578
6	Fear of Flying	8.3	695
7	No Brain, No Gain	7.7	568
8	Union Station	8.3	731
9	Ask Me No Questions, I'll Tell You No Lies	7.6	571
10	Homeless for the Holidays	8.0	642
11	Night Shift	8.4	753
12	Post Mortem	8.1	732
13	Fortune's Fools	7.7	538
14	Whose Appy Now?	8.1	748
15	The Long Way Around	8.5	1,126
16	Faith	7.8	607
17	Tribes	7.7	547
18	You Bet Your Life	7.7	585
19	Calling Dr. Hathaway	7.6	598
20	Random Acts	8.2	661
21	Make a Wish	7.7	594
22	One More for the Road	8.2	593

Season 4 (1997)

7.92 avg 22 episodes 8.1 → 8.2 52 min avg

Mid-peak

Season 4 episodes — IMDb ratings
#	Title	Rating	Votes
1	Ambush	8.1	852
2	Something New	7.5	554
3	Friendly Fire	7.7	541
4	When the Bough Breaks	7.9	546
5	Good Touch, Bad Touch	7.7	510
6	Ground Zero	7.7	524
7	Fathers and Sons	8.3	869
8	Freak Show	7.8	522
9	Obstruction of Justice	7.8	539
10	Do You See What I See?	8.1	650
11	Think Warm Thoughts	7.8	527
12	Sharp Relief	7.7	526
13	Carter's Choice	8.1	610
14	Family Practice	7.6	559
15	Exodus	9.0	1,078
16	My Brother's Keeper	7.7	525
17	A Bloody Mess	7.7	501
18	Gut Reaction	8.0	523
19	Shades of Gray	8.0	577
20	Of Past Regret and Future Fear	7.9	533
21	Suffer the Little Children	7.9	569
22	A Hole in the Heart	8.2	556

Season 5 (1998)

7.90 avg 22 episodes 7.8 → 7.8 47 min avg

Mid-peak

Season 5 episodes — IMDb ratings
#	Title	Rating	Votes
1	Day for Knight	7.8	555
2	Split Second	7.7	491
3	They Treat Horses, Don't They?	7.6	504
4	Vanishing Act	7.6	492
5	Masquerade	8.0	514
6	Stuck on You	7.8	498
7	Hazed and Confused	7.7	490
8	The Good Fight	8.4	606
9	Good Luck, Ruth Johnson	7.7	501
10	The Miracle Worker	8.0	498
11	Nobody Doesn't Like Amanda Lee	7.9	504
12	Double Blind	7.6	466
13	Choosing Joi	7.8	482
14	The Storm: Part 1	8.4	675
15	The Storm: Part 2	8.6	716
16	Middle of Nowhere	8.0	649
17	Sticks and Stones	7.7	474
18	Point of Origin	7.8	463
19	Rites of Spring	7.7	475
20	Power	8.2	581
21	Responsible Parties	8.0	591
22	Getting to Know You	7.8	476

Season 6 (1999)

8.10 avg 22 episodes 7.8 → 8.7 48 min avg

Mid-peak

Season 6 episodes — IMDb ratings
#	Title	Rating	Votes
1	Leave It to Weaver	7.8	532
2	Last Rites	7.8	491
3	Greene with Envy	7.9	494
4	Sins of the Fathers	7.6	472
5	Truth & Consequences	7.8	509
6	The Peace of Wild Things	8.2	612
7	Humpty Dumpty	8.0	504
8	Great Expectations	8.6	669
9	How the Finch Stole Christmas	7.9	501
10	Family Matters	7.7	481
11	The Domino Heart	7.9	483
12	Abby Road	7.9	543
13	Be Still My Heart	9.2	1,440
14	All in the Family	9.6	2,396
15	Be Patient	7.9	503
16	Under Control	7.7	503
17	Viable Options	7.6	478
18	Match Made in Heaven	7.5	472
19	The Fastest Year	7.9	500
20	Loose Ends	8.3	547
21	Such Sweet Sorrow	8.6	830
22	May Day	8.7	704

Season 7 (2000)

7.95 avg 22 episodes 8.1 → 8.8 50 min avg

Big finale
Rebound

Season 7 episodes — IMDb ratings
#	Title	Rating	Votes
1	Homecoming	8.1	630
2	Sand and Water	8.1	487
3	Mars Attacks	7.7	476
4	Benton Backwards	7.9	475
5	Flight of Fancy	7.8	458
6	The Visit	8.4	565
7	Rescue Me	8.2	608
8	The Dance We Do	8.2	528
9	The Greatest of Gifts	8.0	481
10	Piece of Mind	8.4	639
11	Rock, Paper, Scissors	7.5	444
12	Surrender	7.7	449
13	Thy Will Be Done	7.6	456
14	A Walk in the Woods	7.6	499
15	The Crossing	8.4	574
16	Witch Hunt	7.7	438
17	Survival of the Fittest	7.8	451
18	April Showers	7.9	453
19	Sailing Away	7.9	470
20	Fear of Commitment	7.6	444
21	Where the Heart Is	7.7	463
22	Rampage	8.8	752

Season 8 (2001)

8.20 avg 22 episodes 7.7 → 8.6 48 min avg

Rollercoaster

Season 8 episodes — IMDb ratings
#	Title	Rating	Votes
1	Four Corners	7.7	494
2	The Longer You Stay	8.1	487
3	Blood, Sugar, Sex, Magic	8.0	551
4	Never Say Never	7.9	454
5	Start All Over Again	7.7	434
6	Supplies and Demands	7.6	428
7	If I Should Fall from Grace	7.8	443
8	Partly Cloudy, Chance of Rain	8.5	608
9	Quo Vadis?	7.5	427
10	I'll Be Home for Christmas	8.3	605
11	Beyond Repair	8.1	489
12	A River in Egypt	7.6	450
13	Damage Is Done	8.5	515
14	A Simple Twist of Fate	8.5	513
15	It's All in Your Head	8.1	441
16	Secrets and Lies	8.7	818
17	Bygones	7.9	502
18	Orion in the Sky	9.1	884
19	Brothers and Sisters	7.5	497
20	The Letter	9.0	931
21	On the Beach	9.6	2,458
22	Lockdown	8.6	750

Season 9 (2002)

7.76 avg 22 episodes 8.4 → 8.4 49 min avg

Season 9 episodes — IMDb ratings
#	Title	Rating	Votes
1	Chaos Theory	8.4	661
2	Dead Again	7.6	425
3	Insurrection	7.9	454
4	Walk Like a Man	7.5	427
5	A Hopeless Wound	7.8	484
6	One Can Only Hope	7.5	428
7	Tell Me Where It Hurts	7.5	422
8	First Snowfall	8.2	1,559
9	Next of Kin	7.5	421
10	Hindsight	7.6	486
11	A Little Help from My Friends	7.6	426
12	A Saint in the City	7.4	415
13	No Good Deed Goes Unpunished	7.6	418
14	No Strings Attached	7.4	404
15	A Boy Falling Out of the Sky	7.7	412
16	A Thousand Cranes	7.8	439
17	The Advocate	7.7	405
18	Finders Keepers	8.0	426
19	Things Change	7.9	409
20	Foreign Affairs	7.6	410
21	When Night Meets Day	8.1	498
22	Kisangani	8.4	588

Season 10 (2003)

7.87 avg 22 episodes 7.8 → 7.9 47 min avg

Season 10 episodes — IMDb ratings
#	Title	Rating	Votes
1	Now What?	7.8	459
2	The Lost	8.4	689
3	Dear Abby	7.9	467
4	Shifts Happen	7.6	430
5	Out of Africa	8.1	453
6	The Greater Good	7.6	420
7	Death and Taxes	8.0	431
8	Freefall	8.6	665
9	Missing	7.5	413
10	Makemba	7.6	469
11	Touch & Go	7.5	410
12	NICU	8.1	462
13	Get Carter	7.5	423
14	Impulse Control	7.7	416
15	Blood Relations	7.7	406
16	Forgive and Forget	8.0	445
17	The Student	7.7	404
18	Where There's Smoke	8.1	519
19	Just a Touch	7.6	403
20	Abby Normal	7.8	403
21	Midnight	8.4	510
22	Drive	7.9	412

Season 11 (2004)

7.84 avg 22 episodes 7.9 → 8.7 47 min avg

Rebound
Rollercoaster

Season 11 episodes — IMDb ratings
#	Title	Rating	Votes
1	One for the Road	7.9	428
2	Damaged	7.7	736
3	Try Carter	7.7	735
4	Fear	8.0	453
5	Intern's Guide to the Galaxy	7.4	411
6	Time of Death	9.0	1,336
7	White Guy, Dark Hair	7.7	392
8	Shot in the Dark	7.5	389
9	Twas the Night	7.7	419
10	Skin	7.9	422
11	Only Connect	7.5	716
12	The Providers	8.2	416
13	Middleman	7.7	388
14	Just as I Am	7.5	438
15	Alone in a Crowd	8.4	667
16	Here and There	7.8	458
17	Back in the World	7.7	424
18	Refusal of Care	7.5	395
19	Ruby Redux	7.9	415
20	You Are Here	7.5	384
21	Carter est Amoureux	7.5	411
22	The Show Must Go On	8.7	618

Season 12 (2005)

7.70 avg 22 episodes 7.0 → 8.8 48 min avg

Big finale

Season 12 episodes — IMDb ratings
#	Title	Rating	Votes
1	Cañon City	7.0	437
2	Nobody's Baby	7.5	403
3	Man with No Name	7.4	721
4	Blame It on the Rain	7.8	399
5	Wake Up	7.7	433
6	Dream House	7.4	412
7	The Human Shield	7.8	420
8	Two Ships	8.3	475
9	I Do	7.6	392
10	All About Christmas Eve	7.8	424
11	If Not Now	7.4	401
12	Split Decisions	7.7	714
13	Body & Soul	8.2	617
14	Quintessence of Dust	7.6	400
15	Darfur	7.2	407
16	Out on a Limb	7.4	372
17	Lost in America	7.6	368
18	Strange Bedfellows	7.6	378
19	No Place to Hide	7.6	399
20	There Are No Angels Here	7.7	458
21	The Gallant Hero & the Tragic Victor	8.2	486
22	Twenty-One Guns	8.8	821

Season 13 (2006)

7.67 avg 23 episodes 8.6 → 7.7 48 min avg

Season 13 episodes — IMDb ratings
#	Title	Rating	Votes
1	Bloodline	8.6	604
2	Graduation Day	7.9	444
3	Somebody to Love	7.4	416
4	Parenthood	7.4	392
5	Ames v. Kovac	7.6	411
6	Heart of the Matter	7.5	380
7	Jigsaw	7.9	567
8	Reason to Believe	7.3	408
9	Scoop and Run	7.9	452
10	Tell Me No Secrets...	7.7	404
11	City of Mercy	7.6	398
12	Breach of Trust	7.7	396
13	A House Divided	7.7	409
14	Murmurs of the Heart	8.0	561
15	Dying Is Easy...	7.5	394
16	Crisis of Conscience	7.3	378
17	From Here to Paternity	7.4	367
18	Photographs and Memories	7.5	393
19	Family Business	7.6	369
20	Lights Out	7.5	360
21	I Don't	8.2	502
22	Sea Change	7.6	367
23	The Honeymoon Is Over	7.7	463

Season 14 (2007)

7.46 avg 19 episodes 7.7 → 7.9 48 min avg

Big finale
Rebound

Season 14 episodes — IMDb ratings
#	Title	Rating	Votes
1	The War Comes Home	7.7	413
2	In a Different Light	7.4	381
3	Officer Down	7.5	363
4	Gravity	7.5	359
5	Under the Influence	7.4	362
6	The Test	7.3	374
7	Blackout	7.6	405
8	Coming Home	7.3	358
9	Skye's the Limit	7.4	362
10	300 Patients	7.6	386
11	Status Quo	7.6	398
12	Believe the Unseen	7.4	350
13	Atonement	7.2	390
14	Owner of a Broken Heart	7.1	368
15	...As the Day She Was Born	7.3	346
16	Truth Will Out	7.3	349
17	Under Pressure	7.8	399
18	Tandem Repeats	7.5	354
19	The Chicago Way	7.9	500

Season 15 (2008)

7.92 avg 22 episodes 8.6 → 9.2 49 min avg

Big finale
Rebound
Rollercoaster

Season 15 episodes — IMDb ratings
#	Title	Rating	Votes
1	Life After Death	8.6	766
2	Another Thursday at County	7.6	395
3	The Book of Abby	8.5	641
4	Parental Guidance	7.5	381
5	Haunted	7.5	396
6	Oh, Brother	7.4	464
7	Heal Thyself	8.9	753
8	Age of Innocence	7.7	453
9	Let It Snow	7.8	387
10	The High Holiday	7.4	370
11	Separation Anxiety	7.2	351
12	Dream Runner	7.4	466
13	Love Is a Battlefield	7.2	364
14	A Long, Strange Trip	8.5	599
15	The Family Man	7.4	377
16	The Beginning of the End	8.0	491
17	T-Minus-6	7.6	385
18	What We Do	7.9	496
19	Old Times	9.1	1,059
20	Shifting Equilibrium	7.9	424
21	I Feel Good	7.9	525
22	And in the End...	9.2	1,517

ER (1994)

Seasons