#1 - XVIII: Jack and the Ultra-robots 8.73
Season 2 - Episode 5
Jack goes from destroyed village to destroyed village looking for the ultra-robots responsible for the destruction only to find that they were created by a troll commissioned by Aku.
#2 - VII: Jack and the Three Blind Archers 8.68
Season 1 - Episode 7
Samurai Jack hears of a mysterious island which possesses a well that can grant any wish. He arrives at the island and discovers the well is not alone.
#3 - XI: Jack and the Scotsman 8.66
Season 1 - Episode 11
When Jack and a Scotsman meet on a seemingly never-ending bridge, they end up shackled together and on the run from bounty hunters.
#4 - XXV: Jack and the Spartans 8.58
Season 2 - Episode 12
As jack climbs up to the top of a mountain he meets up with an army of great warriors and gets asked to help them in the last chapter of a 300 year battle.
#5 - XXXVIII: The Birth of Evil (2) 8.58
Season 3 - Episode 12
The gods send the Emperor a mystical horse to free him and deliver him to a castle in the sky. The three gods give him powers and forge a mystic sword for him to wield. The Emperor goes forth to fight Aku. Aku is vulnerable to the sword but his shape shifting abilities prove the Emperor's equal, particularly when Aku takes on the form of an entire army. But the Emperor manages to prove seemingly triumphant and the Emperor's wife greets him with his newborn son. The Emperor resolves that in case Aku returns, he must formulate a plan.
#6 - XIV: Jack Learns to Jump Good 8.56
Season 2 - Episode 1
Jack tries to save a peaceful tribe that move constantly due to an opposing food-stealing tribe of monkey/lions: Jack meets up with the Monkey Boy who can ""jump good"" almost to the point of flying. Jack is taken to his village and agrees to teach a group of furry creatures to fend for themselves in return for ""jumping good"" lessons. Jack teaches the creatures to use bamboo to fight and together they set up an array of traps for the monkey/lions. In return Jack has an challenging time trying to ""jump good"", a process involving climbing hills and vines... with boulders attached to his body.
#7 - XXX: Jack and the Zombies 8.56
Season 3 - Episode 4
Aku resolves to do something about The Samurai once and for all and lures him into a cemetery. Then the wizard unleashes hordes of the undead and one of the creatures manages to possess Jack's sword and deliver it to Aku. Armed with the sword and his own shape-shifting powers, Aku runs Jack ragged and then captures him and tries to kill him with the sword...which Jack finally remembers can't be used by the evil to harm the innocent. With the sword incapable of harming him, Jack regains his weapon and drives Aku away.
#8 - XXXVI: Jack, the Monks, and the Ancient Master's Son 8.52
Season 3 - Episode 10
Jack meets two Shaolin monks and after a brief fight he convinces them of his credentials and they take him to see their Grand Master at their hidden temple. The Master was at the temple when Jack studied there and remembers him. The Master directs Jack to a gateway that opens at noon and he and the two monks travel to the tower it is atop. Moving up the tower's catwalks they must fight a seemingly endless horde of stone statues. Jack gets to the portal but turns back to help the two monks rather then make his escape. The three of them escape the statues by destroying the tower and his time portal.
#9 - XLIV: The Princess and the Bounty Hunters 8.50
Season 4 - Episode 5
Bounty hunters come together and vie among themselves to determine who will go first. Each hunter outlines his plan while another, armored hunter points out the flaws in each plan. The armored hunter is a woman, Princess Mira and she proposes they fight together, but she claim the bounty so that Aku will free her people.. The bounty hunters prepare their trap, digging pits to ambush Jack. But Jack defeats them all in the span of a second and even the princess yields before his superior ability.
#10 - XX: Jack and the Monks 8.50
Season 2 - Episode 7
After Aku's beetle drones destroy yet another gateway to the past, only moments before he's is able to reach it, Jack is overcome with frustration and is about ready to give up the quest. Then, by chance, he meets three monks about to climb the Mountain of Fatoom. Where, legend has it, truth can be found at the top.
#11 - XXII: Jack and the Hunters 8.44
Season 2 - Episode 9
On an alien planet, Aku contacts four Emikandi hunters and offers them the chance to hunt Jack. They capture Jack with incredible ease but Jack just as easily frees himself after he hears they're working for Aku and the real hunt begins! After an extended chase the two sides battle atop a skyscraper and Jack falls to his death...but the hunters rescue him out of respect for their greatest prey. Then the Emikandi refuse to give him to Aku out of respect for Jack's skill and depart.
#12 - XL: Samurai versus Ninja 8.41
Season 4 - Episode 1
Aku sends forth the robotic ninja Shinobi, Warrior of the Dark, to kill the Samurai. Jack responds to the cries of a young boy from a village beset by robot lobsters. Jack defeats them all while Shinobi watches - then the ninja takes the boy to a nearby ruined tower where he strikes from the darkness at Jack as he follows. Jack knows of the ninja's technique and reveals that he is trained to blend with the light just as Shinobi can blend with the dark. The warriors of light and dark fight from shadow to light and back again - with the sun going down, Jack quickly runs out of concealment and in a last desperate measure reflects the waning light onto Shinobi and destroys him with a well-tossed sword.
#13 - XXXIX: Jack and the Labyrinth 8.41
Season 3 - Episode 13
Jack is directed to a deathtrap-filled labyrinth which holds a diamond that can restore him to his time. Unfortunately a master Thief also enters the labyrinth going for the item. The two of them prove equally adept in their own styles of bypassing the same traps through technology and training. The two men are forced to alternately join forces to defeat the guardian statue-robots and double-cross each other to make sure they end up with the gem. Jack helps the Thief escape who in return leaves him trapped - overwhelmed, Jack is on the verge of defeat when the Thief returns to pull him out. The two seem to come to terms...just as the diamond shatters and the Thief apparently disappears.
#14 - XIX: Jack Remembers the Past 8.40
Season 2 - Episode 6
After defeating a band of robotic cat-demons Jack travels the land and finds himself in the area where he grew up. As he tours the ruins he has flashbacks to a day spent pursuing a locust in the company of a young girl, witnessing a wandering warrior defeat four men on a bridge, having his parents greet him, and tricking three bullies.
#15 - XXXV: Jack and the Haunted House 8.39
Season 3 - Episode 9
Jack travels through a beautifully animated swampland, when he comes across a small shadow crying in the distance. After approaching the being, it drops a small toy doll and Jack follows it back to a small house in hopes of giving the item back to the creature. Jack travels through the house, taking on the memory of a family, ravaged by some creature, with each specific items unlocking these horror filled dreams. Jack finally uncovers the owner of the doll, a little girl, and also discovers that all the windows or doors have disappeared. Later Jack awakens to see the little girl gone, only to find in a beautiful room with the family Jack sees in his visions. Although the family pretends nothing is amiss, eventually each lets out strange light from their mouths which forms into a large shadowy dragon beast that devours Jack, allowing him to see the family trapped inside.
#16 - VI: Jack and the Warrior Woman 8.37
Season 1 - Episode 6
Jack searches for the the magical jewel the Woolies told him would be able to send him back in time. Locating the last survivor of the race who can reveal its location, Jack learns of how to find the jewel, and meets up with a woman questing for the same jewel. They journey through the desert together, but will they be able to share the jewel if they find it?
#17 - XVII: Jack and the Scotsman (2) 8.34
Season 2 - Episode 4
The Scotsman needs Jack's help to save his kidnapped wife. But this woman is hardly the distressed damsel the Scotsman makes her out to be.
#18 - XXVIII: Jack and the Rave 8.27
Season 3 - Episode 2
In his travels Jack comes to a tavern and a crying tavern owner. Then shadowy figures attack but Jack discovers they are teenagers, the "Children of Aku", under a magical musical spell. Knocking one out and following them in disguise, jack finds their rave and a sinister DJ playing the music. The DJ spots Jack and a fight ensues. Jack takes the fight directly to the DJ who is his near-equal. When Jack gets the upper hand the DJ dons a speaker-battlesuit but Jack regains his lost sword at the last minute and triumphs, freeing the children.
#19 - III: The First Fight 8.25
Season 1 - Episode 3
Aku learns of Jack's arrival in the future, and of the help he is giving the dogs. He sends a huge army of insect drones to destroy Jack and the dogs alike. Jack has been busy preparing many traps for them however, and when they arrive the battle begins in earnest.
#20 - X: Jack and the Lava Monster 8.24
Season 1 - Episode 10
Called on by a mysterious voice, Jack overcomes many obstacles and booby traps to find who is calling him. Deep in the earth he finds it is a creature made from rock and lava, who immediately challenges Jack to a fight, but why did it call for Jack?
#21 - I: The Beginning 8.22
Season 1 - Episode 1
Aku, the shape-shifting master of evil, devastates a young boy's land, forcing him to travel around the world to train as a samurai. When Samurai Jack returns to free his people, he is instead flung into the far future, where he must quest to undo the future that is Aku.
#22 - XXVI: Jack's Sandals 8.21
Season 2 - Episode 13
Jack's enjoying a nice, quiet day by the riverside... until a band of transforming biker-bots nearly runs him down, wrecking his precious sandals in the process!
#23 - XXXVII: The Birth of Evil (1) 8.18
Season 3 - Episode 11
The gods Odin, Ra, and Rama battle a great dark evil. One shard escapes and falls to primitive Earth, creating a vast black forest. Down through the millennia it spreads and kills until the period of feudal Japan. An emperor and his army set out to fight the evil with the aid of a mystical elixir. His army is wiped out but the emperor fires an arrow covered with the elixir into the heart of the darkness, but only sets it free and gives it voice and face: Aku. Aku imprisons the Emperor and wipes out his lands.
#24 - XXVII: Chicken Jack 8.17
Season 3 - Episode 1
Jack bumps into an old wizard who transforms him into a chicken - a rather goofy-looking master of the martial arts that nobody can understand. He gets captured and taken to a animal fight where he must defeat a robot beetle and snake. Jack wins but must then fight a spider-like creature, a giant worm, and the ratlike mechanical "Finisher". Jack's series of wins make his new owner a wealthy man but when he goes out to buy some decent clothing he bumps into the same wizard who hits them both with a spell - causing Jack to become human and the owner to become a chicken. Jack departs with a new found appreciation for the virtues of not eating chicken.
#25 - LI: Young Jack in Africa 8.16
Season 4 - Episode 12
This episode takes place during Jack's childhood. After Aku's first attack, Jack is brought to a tribe in Africa where he is admitted into the adult community after a small ritual and the chief of the village teaches him the art of fighting with a stick. But an enemy tribe attacks the village in order to get a reward promised by Aku for Jack's capture and everyone is captured except for Jack. So he follows them, mastering the captors' weapon, using qualities of the animals he has observed to do so. After a difficult series of fights, Jack releases all the prisoners and with their help, the enemy tribe is defeated. At the end, Jack leaves the tribe because he is now considered to have learned all he can from them.