On 2002.6.13, I completed watching every single episode of DS9.  Yay!
(NOTE: my favorite episodes are in red)

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DS9 - Season 1
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Emissary I, II  46379.1
Past Prologue: A Bajoran terrorist tries to get Kira to join him
A Man Alone: Odo accused of murder
Babel - (46423.7) a disease spreads on DS9 that affects everyone's ability to speak coherently
Captive Pursuit  a Con-mar flees to DS9
Q-Less  46531.2: Q comes aboard DS9 with Vash.
Dax  46910.1
The Passenger  a prisoner transfers his consciousness
Move Along Home
The Nagus
Vortex  a thief tempts Odo to find a changeling colony he saw
Battle Lines
The Storyteller   46729.1  Bashir & O'Brian get to know each other
Progress  46844.3
If Wishes Were Horses  everyone's wishes become reality.  Very funny episode
The Forsaken 46925.1
Dramatis Personae: a spirit takes over DS9 crew except for Odo
Duet: a Cardassian clerk tries to take blame for war crimes
In the Hands of the Prophets: Winn criticizes Keiko's teachings
 
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DS9 - Season 2
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The Homecoming
The Circle
The Siege
Invasive Procedures  47182.1 a trill tries to steal Dax from Jadzia
Cardassians: Garak unfoils Dukat's scheme
Melora  47229.1 Bashir's gravity-less GF
Rules of Acquisition: 1st mention of Dominion
Necessary Evil  47282.5  5 year-old murder case
Second Sight  47329.4  Sisko falls in love
Sanctuary: displaced race claims Bajor as homeland
Rivals: Too much luck on station
The Alternate  47391.7  Odo brings havoc on the station
Armageddon Game: Bashir and O'Brian stuck on a planet
Whispers: O'Brian flees DS9
Paradise  47573.1  Sisko & Obrian get stuck on a colony with no technology
Shadowplay (47603.3)  hologram society
Playing God: tiny-developing universe
Profit and Loss: Quark's lover comes to the station.  Garak makes an appearance.
Blood Oath: Dax goes off with 3 Klingons for revenge
The Maquis Part I
The Maquis Part II
The Wire: Garak being killed by a brain implant
Crossover: 1st encounter with parallel universe
The Collaborator: Winn is elected as Kai
Tribunal: 47944.2  O'Brian wrongly accused
The Jem'Hadar: first encounter with Dominion
 
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DS9 - Season 3
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The Search, Part I: 48212.4  Romulans loan cloak in exchange for information on Dominion
The Search, Part II: Dominion performs experiment on the crew to determine the limits of the Federation
The House of Quark: Quark murders a Klingon
Equilibrium: Dax finds out about previous host Juran
Second Skin: Kira disguised as Cardassian
The Abandoned: young Jem’haddar found on DS9
Civil Defense: DS9 set on self-destruct, Dukat being arrogant
Meridian: corporeal and non-corporeal planet
Defiant: Thomas Riker
Fascination: everyone starts falling in love
Past Tense, Part I: Sisko & Bashir go to 2050 SF.  Lame episodes.
Past Tense, Part II
Life Support: Kai Winn usese Borile to complete negotiations w/ Cardassians
Heart of Stone: Odo reveals his love for Kira
Destiny: 48543.2  communications established between Gamma and Alpha quadrant
Prophet Motive: Quark has orb experience
Visionary: O'Brian shifts through time
Distant Voices: an alien gets inside Bashir's mind
Through the Looking Glass: Sisko's 1st encounter with parallel universe
Improbable Cause: Garak shop is blown up
The Die Is Cast: Obsidian Order & Tal shi-yar go up against the Dominion
Explorers: Sisko and Jake travel in an old Bajoran vessel.  A nice episode, like 'Family'
Family Business: Quark's mother makes a profit, Sisko meets Kasidy
Shakaar: Kira joins resistance with Shakaar
Facets: Dax meets her previous hosts
The Adversary: 48959.1   Odo faces off with a changeling

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DS9 - Season 4
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Way of the Warrior, Part I
Way of the Warrior, Part II: DS9 shows off it's awesome weapons barrage
Visitor: good suspense
Hippocratic Oath
Indiscretions
Rejoined
Little Green Men
Starship Down
The Sword of Kahless
Our Man Bashir
Homefront
Paradise Lost
Crossfire
Return to Grace
The Sons of Mogh
The Bar Association: Leeta =)
Accession
Rules of Engagement
Hard Times: O'Brian experiences 15 yrs of prison time
Shattered Mirror: cool space fights
Muse
For The Cause
The Quickening
To the Death: Jem'hadar are trying to create an Iconian gate
Body Parts
Broken Link

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DS9 - Season 5
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Apocalypse Rising: 50049.3  get rid of Gawron changeling
The Ship: a Changeling dies on a planet
Looking for Par'mach in All the Wrong Places: Quark’s ex-wife comes to DS9, Worf makes out with Dax
...Nor the Battle to the Strong: Jake whimps out
The Assignment: Pah-raith take over Keiko
Trials and Tribble-ations: Kirk
He Who is Without Sin: Worf, Dax, Leeta, & Bashir go to Risa
Things Past: go back to Terek Nor
The Ascent: Odo & Quark crash land
Rapture: Sisko has visions about the future
The Darkness and the Light: Kira’s friends from the occupation are all murdered
The Begotten: Odo regains shapeshifting ability
For the Uniform: Sisko captures Eddington
In Purgatory's Shadow: Garak and Worf get caught by the Dominion
By Inferno's Light: Garak, Worf, Martok, & Bashir escape; Cardassia joins the Dominion
Doctor Bashir - I Presume: the Doctor discovers that Bashir was genetically enhanced
A Simple Investigation: Odo makes out with a woman
Business as Usual: Quark sells weapons
Ties of Blood and Water: Tekeny Ghemor dies
Ferengi Love Songs
Soldiers of the Empire: Martok not fit to lead
Children of Time: the Defiant travels back into time 200 years
Blaze of Glory: Maquis attempt to attack Cardassia
Empok Nor: Garak, O'Brian, and others go visit the spooky Empok Nor
In the Cards: Jake tries to get a baseball card for his father
Call to Arms: 50975.2  DS9 is taken over
 
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DS9 - Season 6
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A Time to Stand
Rocks and Shoals
Sons and Daughters
Behind the Lines
Favor the Bold
The Sacrifice of Angels: the conclusion to a 7-episode continuation
You're Cordially Invited...: Worf & Jadzia get married
Resurrection: Borile comes back to life
Statistical Probabilities
The Magnificent Ferengi: funny episode =)
Waltz: Dukat escapes from his prison cell
Who Mourns for Morn?
Far Beyond the Stars: Sisko is in the 60's
One Little Ship: the Defiant is shrunk
Honor Among Thieves
Change of Heart: Worf has to leave Jadzia or complete his mission
Wrongs Darker Than Death or Night: Kira travels into the past to see her mother
Inquisition: Bashir gets investigated by Section 31
In the Pale Moonlight: Sisko gets the Romulans to join the fight against the Dominion
His Way: Odo and Kira get together
The Reckoning: the Prophets and the Pah-raith fight against each other on DS9
Valiant
Profit and Lace
Time's Orphan: Molly falls into a time portal
The Sound of Her Voice
Tears of the Prophets
 
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DS9 - Season 7
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Image in the Sand
Shadows and Symbols
Afterimage: Ezri tries to get along with the crew
Take Me Out To The Holosuite: baseball
Chrysalis: Bashir tries to get with one of his patients
Treachery, Faith And The Great River: a double Weyoun
Once More Into The Breach
The Siege of AR-558
Covenant: Dukat is back
It's Only A Paper Moon
Prodigal Daughter
The Emperor's New Cloak: the conclusion of the mirror universe
Field of Fire: Ezri's homicidal self helps solve a crime
Chimera: Odo meets a changeling
Badda-Bing Badda-Bang
Inter Arma Enim Silent Leges: Bashir carries out a Section 31 mission
Penumbra: Worf is missing
Umbra
Eclipse
The Changing Face of Evil
When It Rains...
Tacking Into The Wind
Night Tremors
The Dogs of War
What You Leave Behind [1]
What You Leave Behind [2]