So far, I have summarized about 280 of the roughly 320 episodes of Law & Order. I will sort this (automatically generated) list more appropriately when I get some time.
1.11 Out of the Half-Light: Best Episode Ever?
1.12 Life Choice
1.13 A Death in the Family
1.18 The Secret Sharers
1.19 The Serpent's Tooth
1.2 Subterranean Homeboy Blues
1.4 Kiss the Girls and Make Them Die
1.7 By Hooker, By Crook
10.11 Collision
10.12 Mother's Milk
10.18 Mega
10.2 Killerz: Skoda vs. Olivet +
10.21 Narcosis
10.24 Vaya Con Dios: McCoy at the Supreme Court, Adam Schiff's Last Episode
10.3 DNR
10.5 Justice: The First Return of Jamie Ross
10.7 Patsy
10.8 Blood Money
10.9 Sundown
11.12 Teenage Wasteland
11.13 Phobia
11.14 A Losing Season
11.17 Amends
11.17 Ego
11.18 White Lie
11.2 Turnstile Justice
11.21 Brother's Keeper
11.24 Deep Vote: Abbie Carmichael's Last Episode
11.3 Dissonance
11.5 Return
11.6 Burn Baby Burn
11.8 Thin Ice
12.1 Girl Most Likely
12.10 Prejudice
12.12 Undercovered
12.14 Missing
12.18 Equal Rights
12.19 Slaughter
12.2 Armed Forces
12.22 Attorney Client
12.23 Oxymoron
12.24 Patriot: Nora Lewin's Last Episode. Thank God.
12.3 For Love or Money
12.5 Possession
12.6 Formerly Famous
12.7 Myth of Fingerprints
13.1 American Jihad: First Appearance of Arthur Branch
13.10 Mother's Day
13.11 Chosen
13.12 Under God
13.13 Absentia
13.14 Star Crossed
13.15 Bitch: Skoda vs. Olivet, Round 2
13.18 Maritime
13.19 Seer
13.2 Shangri-La
13.21 House Calls
13.24 Smoke
13.5 The Ring
13.6 Hitman
13.7 Open Season
13.8 Asterisk
14.1 Bodies
14.10 Ill-Conceived
14.11 Darwinian
14.12 Payback
14.13 Married with Children
14.14 City Hall
14.15 Veteran's Day
14.16 Can I Get a Witness
14.17 Hands Free
14.18 Evil Breeds
14.19 Nowhere Man: The Mayor Bloomberg Episode
14.2 Bounty
14.20 Everybody Loves Raimondo's
14.21 Vendetta
14.22 Gaijin
14.23 Caviar Emptor
14.24 C.O.D.: Lennie Briscoe's Last Episode
14.4 Shrunk
14.5 Blaze
14.6 Identity
14.7 Floater
14.8 Embedded
14.9 Compassion
15.1 Paradigm: Joe Fontana's First Episode
15.13 Ain't No Love: Serena Southerlyn Gets Fired (Thank God!)
15.2 The Dead Wives Club
2.15 Trust
2.2 Wages of Love: Jerry Orbach Plays a Lawyer
2.20 Intolerance
2.21 Silence
2.5 God Bless the Child
2.9 Renunciation
3 Dawg Night
3.10 Consultation
3.11 Extended Family
3.12 Right to Counsel
3.14 Promises to Keep
3.16 Jurisdiction
3.17 Conduct Unbecoming
3.18 Animal Instinct
3.2 Conspiracy
3.9 Point of View: Lennie Briscoe's First Episode, Phil Cerreta's Last Episode
4.10 The Pursuit of Happiness
4.11 Golden Years
4.12 Snatched
4.13 Breeder
4.14 Censure
4.18 Wager
4.19 Sanctuary
4.2 Volunteers
4.20 Nurture
4.22 Old Friends: Ben Stone's Last Episode
4.4 Profile
4.5 Black Tie
4.6 Pride and Joy
4.7 Apocrypha
4.8 American Dream
4.9 Born Bad
5.1 Second Opinion: Jack McCoy's First Episode
5.10 House Counsel
5.11 Guardian
5.12 Progeny
5.13 Rage
5.14 Performance
5.16 Wannabe
5.17 Act of God
5.18 Privileged
5.19 Cruel and Unusual
5.2 Coma
5.21 Purple Heart
5.22 Switch
5.23 Pride: Mike Logan's Last Episode
5.3 Blue Bamboo
5.4 Family Values
5.5 White Rabbit
5.7 Precious
5.8 Virtue
5.9 Scoundrels
6.1 Bitter Fruit: Rey Curtis' First Episode
6.10 Remand
6.11 Corpus Delicti
6.12 Trophy: Battle of McCoy's Lovers!
6.14 Custody: The Return of Paul Robinette
6.15 Encore
6.16 Savior
6.17 Deceit
6.18 Atonement
6.19 Slave
6.2 Rebels
6.20 Girlfriends
6.23 Aftershock: The Death of Claire Kincaid
6.4 Jeopardy
6.9 Blood Libel
7.1 Causa Mortis: Jamie Ross's First Episode
7.10 Legacy
7.11 Menace
7.12 Barter
7.13 Matrimony
7.14 Working Mom
7.18 Mad Dog
7.19 Double Down
7.2 I.D.: McCoy Jailed for Contempt
7.20 We Like Mike
7.21 Passion
7.22 Past Imperfect
7.23 Terminal: Schiff Takes on the Governor
7.3 Good Girl
7.5 Corruption
7.6 Double Blind
7.7 Deadbeat
7.9 Entrapment: The Return of the Oracle
8.10 Ritual
8.11 Under the Influence
8.12 Expert
8.13 Castoff
8.14 Grief
8.16 Divorce
8.19 Disappeared
8.2 Denial: Emil Skoda's First Appearance
8.23 Tabloid
8.24 Monster: Jamie Ross's Last Episode
8.3 Navy Blues
8.5 Nullification
8.6 Baby It's You: A Homicide Cross-over Episode
8.7 Blood
9.1 Cherished: Abbie Carmichael's First Episode
9.10 Hate
9.11 Ramparts
9.12 Haven
9.13 Hunters
9.15 Disciple
9.16 Harm
9.17 Shield
9.19 Tabula Rasa
9.2 DWB
9.21 Ambitious
9.3 Bait
9.4 Flight
9.5 Agony
9.7 Venom
9.8 Punk
9.9 True North
Access Nation
All My Children
Bad Faith
Bad Girl
Big Bang
Blood Is Thicker...
Bronx Cheer
Burned
Carrier
Confession
Cradle to Grave
D-Girl
DR 1-102
Damaged: Briscoe's Daughter Gets Killed
Dazzled
Doubles
Empire: The Julia Roberts Episode
Endurance: First Appearance of Nora Lewin and Rudy Giuliani
Episode Title Unknown
Faccia a Faccia
Family Business
Fools for Love
Forgiveness
Foul Play
Genius
Gun Show
Harvest
Heaven
High & Low
Hubris
In Memory Of
Judge Dread
Loco Parentis
Marathon
Mayhem
Merger
Misconception
Night and Fog
Panic
Paranoia
Refuge: Parts 1 and 2
Savages
Securitate
Self Defense
Severance
Shadow
Showtime
Sideshow: A Homicide Cross-over Episode
Sisters of Mercy
Skin Deep: Claire Danes, Murder Suspect
Sonata for a Solo Organ
Stalker
Standoff
Stiff
Suicide Box
Surrender Dorothy
Survivor
Swept Away: A Very Special Episode
The Blue Wall
The Collar
The Fertile Fields
The Fire This Time
The Wheel
Thrill
Trade This
Tragedy on Rye
Turnaround
Untitled
Vengeance
Violence of Summer
Virus
Wedded Bliss
Whiplash
Whose Monkey Is It Anyway? aka Curious George
Working Stiff