#1 - Enemy at the Gate 8.37
Season 5 - Episode 20
The team learns that a rogue Wraith has acquired several Z.P.M.s to power a formidable new hive ship -- and he is headed for Earth.
#2 - The Return (2) 8.30
Season 3 - Episode 11
The Atlantis team goes against orders to try and save Atlantis from Replicator control -- and to rescue General O'Neill and Richard Woolsey, who are trapped in the occupied city.
#3 - Be All My Sins Remember'd (2) 8.29
Season 4 - Episode 11
With a plan to potentially extinguish the Replicator threat, the Atlantis team must seek an alliance with a fleet of Wraith ships.
#4 - Midway 8.27
Season 4 - Episode 17
Teal'c visits Atlantis to counsel a headstrong Ronon, who is up for review by the I.O.A. But the two must work together when the Wraith invade the Midway space station in order to reach Earth.
#5 - The Siege (2) 8.27
Season 1 - Episode 20
A new military contingent from Earth is sent to take command of Atlantis and defend it from the impending Wraith attack.
#6 - Allies (1) 8.27
Season 2 - Episode 20
Michael and his Wraith faction arrive at Atlantis to propose an alliance, hoping to use the retrovirus to transform their Wraith enemies into prey.
#7 - The Siege (3) 8.26
Season 2 - Episode 1
The Daedalus arrives to defend Atlantis from the Wraith onslaught, but it may not be enough when the team discovers that an even larger armada is on the way.
#8 - The Last Man (1) 8.24
Season 4 - Episode 20
Sheppard returns to Atlantis after a mission and finds the city abandoned, all systems dead -- and instead of ocean, sand dunes as far as the eye can see.
#9 - Common Ground 8.24
Season 3 - Episode 7
Colonel Sheppard finds himself the prisoner of a Genii commander, along with a desperately hungry Wraith who has been separated from his hive.
#10 - Lifeline (3) 8.24
Season 4 - Episode 2
Colonel Sheppard and his team embark on a risky mission to steal a Z.P.M. power module from the Replicators -- but must rely on a compromised Dr. Weir to succeed.
#11 - First Strike (1) 8.23
Season 3 - Episode 20
An unstoppable energy weapon leaves Atlantis under seige after Earth launches a preemptive attack against a very powerful enemy's homeworld.
#12 - The Siege (1) 8.20
Season 1 - Episode 19
With a group of Wraith hive ships on the way to Atlantis, the team searches for a place to flee and a way to destroy the city. McKay leads a team to try and activate the Ancients' orbital weapons platform.
#13 - Adrift (2) 8.20
Season 4 - Episode 1
Floating in deep space with the city's protective shield failing, the team must do all they can to keep Atlantis alive. A radical injury threatens Dr. Weir's life.
#14 - Tao of Rodney 8.17
Season 3 - Episode 14
After an Ancient device gives Rodney superhuman powers, his enhanced brilliance is checked only by his impending death -- unless he can learn how to ascend.
#15 - Inferno 8.17
Season 2 - Episode 19
Sheppard's team meets a civilization about to be destroyed by a super-volcano, and is trapped there when the Stargate is destroyed during the evacuation.
#16 - Sunday 8.16
Season 3 - Episode 17
The team tries to relax during a mandatory day off, until an explosion leaves three people dead -- and reveals that one scientist is a walking time bomb.
#17 - Rising (1) 8.15
Season 1 - Episode 1
A new Stargate team embarks on a dangerous mission to a distant galaxy, where they discover a mythical lost city -- and a deadly new enemy.
#18 - Rising (2) 8.12
Season 1 - Episode 2
Sheppard tries to convince Weir to mount a rescue mission to free Colonel Sumner, Teyla, and the others captured by the Wraith.
#19 - The Shrine 8.11
Season 5 - Episode 6
Rodney McKay is stricken with a mental affliction that robs him of his knowledge and memories, causing him to revert to a childlike state.
#20 - No Man's Land (2) 8.09
Season 3 - Episode 1
The team desperately attempts to stop two Wraith hive ships from reaching Earth. Sheppard must rely on an old foe to rescue McKay and Ronon.
#21 - Before I Sleep 8.08
Season 1 - Episode 15
A woman is found in suspended animation in Atlantis, and the team is shocked to see that it is Dr. Weir herself, who tells them of her trip 10,000 years into the city's past.
#22 - McKay and Mrs. Miller 8.08
Season 3 - Episode 8
Rodney McKay is reunited with his estranged sister back on Earth, who has given up a brilliant career as a scientist to raise a family.
#23 - The Eye (2) 8.08
Season 1 - Episode 11
Major Sheppard plays a dangerous game of cat and mouse with soldiers who have seized control of Atlantis and taken Weir and McKay hostage.
#24 - The Lost Tribe (2) 8.08
Season 5 - Episode 11
Sheppard races to an Ancient laboratory to save McKay and Daniel Jackson before Todd arrives to destroy a weapon that has a devastating side-effect. Daniel uncovers the identity of the hostile new species.
#25 - Aurora 8.07
Season 2 - Episode 9
When the team finds an Ancient warship adrift on the edge of the galaxy, its crew still alive, Colonel Sheppard enters their virtual reality stasis to communicate with them.